1212210111120 has 160 divisors (see below), whose sum is σ = 3957212793600. Its totient is φ = 306364557312.

The previous prime is 1212210111107. The next prime is 1212210111127. The reversal of 1212210111120 is 211110122121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1212210111120.

It is not an unprimeable number, because it can be changed into a prime (1212210111127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 405675 + ... + 1609034.

It is an arithmetic number, because the mean of its divisors is an integer number (24732579960).

Almost surely, 2^{1212210111120} is an apocalyptic number.

1212210111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212210111120 is an abundant number, since it is smaller than the sum of its proper divisors (2745002682480).

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

1212210111120 is a wasteful number, since it uses less digits than its factorization.

1212210111120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014857 (or 2014851 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1212210111120 its reverse (211110122121), we get a palindrome (1423320233241).

The spelling of 1212210111120 in words is "one trillion, two hundred twelve billion, two hundred ten million, one hundred eleven thousand, one hundred twenty".