1101000001212 has 18 divisors (see below), whose sum is σ = 2783083336488. Its totient is φ = 367000000392.

The previous prime is 1101000001169. The next prime is 1101000001217. The reversal of 1101000001212 is 2121000001011.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1101000001194 and 1101000001203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101000001217) 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, 15291666648 + ... + 15291666719.

It is an arithmetic number, because the mean of its divisors is an integer number (154615740916).

Almost surely, 2^{1101000001212} is an apocalyptic number.

1101000001212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1101000001212 is an abundant number, since it is smaller than the sum of its proper divisors (1682083335276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1101000001212 is a wasteful number, since it uses less digits than its factorization.

1101000001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30583333377 (or 30583333372 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1101000001212 its reverse (2121000001011), we get a palindrome (3222000002223).

The spelling of 1101000001212 in words is "one trillion, one hundred one billion, one thousand, two hundred twelve".