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BaseRepresentation
bin10001100111111011001…
…111101011000110100101
311021210001201012100022100
4101213323033223012211
5124320313324000401
62324212213322313
7153333132434556
oct21477317530645
94253051170270
101211101000101
11427696a39843
12176877336399
138a28b416115
14428909aa32d
152178457ab86
hex119fb3eb1a5

1211101000101 has 6 divisors (see below), whose sum is σ = 1749368111270. Its totient is φ = 807400666728.

The previous prime is 1211101000093. The next prime is 1211101000133. The reversal of 1211101000101 is 1010001011121.

Adding to 1211101000101 its reverse (1010001011121), we get a palindrome (2221102011222).

It can be divided in two parts, 121110 and 1000101, that added together give a palindrome (1121211).

It can be written as a sum of positive squares in only one way, i.e., 990552420225 + 220548579876 = 995265^2 + 469626^2 .

It is not a de Polignac number, because 1211101000101 - 23 = 1211101000093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 134566777789 = 1211101000101 / (1 + 2 + 1 + 1 + 1 + 0 + 1 + 0 + 0 + 0 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211101000141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67283388886 + ... + 67283388903.

Almost surely, 21211101000101 is an apocalyptic number.

It is an amenable number.

1211101000101 is a deficient number, since it is larger than the sum of its proper divisors (538267111169).

1211101000101 is a wasteful number, since it uses less digits than its factorization.

1211101000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134566777795 (or 134566777792 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

The spelling of 1211101000101 in words is "one trillion, two hundred eleven billion, one hundred one million, one hundred one", and thus it is an aban number.