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1212110210011 = 8279914639189
BaseRepresentation
bin10001101000110111011…
…001100000001111011011
311021212200001012112001011
4101220313121200033123
5124324400203210021
62324500304234351
7153400135534531
oct21506731401733
94255601175034
101212110210011
11428064683118
12176ab930b9b7
138a3bc52934c
1442948a34151
15217e2e7ade1
hex11a376603db

1212110210011 has 4 divisors (see below), whose sum is σ = 1212124932000. Its totient is φ = 1212095488024.

The previous prime is 1212110209993. The next prime is 1212110210021. The reversal of 1212110210011 is 1100120112121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1212110210011 is a prime.

It is a super-2 number, since 2×12121102100112 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212110209973 and 1212110210000.

It is not an unprimeable number, because it can be changed into a prime (1212110210021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7236796 + ... + 7402393.

It is an arithmetic number, because the mean of its divisors is an integer number (303031233000).

Almost surely, 21212110210011 is an apocalyptic number.

1212110210011 is a deficient number, since it is larger than the sum of its proper divisors (14721989).

1212110210011 is an equidigital number, since it uses as much as digits as its factorization.

1212110210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14721988.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1212110210011 its reverse (1100120112121), we get a palindrome (2312230322132).

The spelling of 1212110210011 in words is "one trillion, two hundred twelve billion, one hundred ten million, two hundred ten thousand, eleven".

Divisors: 1 82799 14639189 1212110210011