121210011222112 has 48 divisors (see below), whose sum is σ = 251223674506560. Its totient is φ = 57407982774912.

The previous prime is 121210011222059. The next prime is 121210011222121. The reversal of 121210011222112 is 211222110012121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 121210011222112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7851978 + ... + 17437705.

It is an arithmetic number, because the mean of its divisors is an integer number (5233826552220).

Almost surely, 2^{121210011222112} is an apocalyptic number.

It is an amenable number.

121210011222112 is an abundant number, since it is smaller than the sum of its proper divisors (130013663284448).

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

121210011222112 is a wasteful number, since it uses less digits than its factorization.

121210011222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25297595 (or 25297587 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121210011222112 its reverse (211222110012121), we get a palindrome (332432121234233).

The spelling of 121210011222112 in words is "one hundred twenty-one trillion, two hundred ten billion, eleven million, two hundred twenty-two thousand, one hundred twelve".