121111021112120 has 256 divisors, whose sum is σ = 297654638924160. Its totient is φ = 44082795773952.

The previous prime is 121111021112099. The next prime is 121111021112171. The reversal of 121111021112120 is 21211120111121.

It is a super-2 number, since 2×121111021112120² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29852357132 + ... + 29852361188.

Almost surely, 2^{121111021112120} is an apocalyptic number.

121111021112120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121111021112120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148827319462080).

121111021112120 is an abundant number, since it is smaller than the sum of its proper divisors (176543617812040).

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

121111021112120 is a wasteful number, since it uses less digits than its factorization.

121111021112120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6362 (or 6358 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121111021112120 its reverse (21211120111121), we get a palindrome (142322141223241).

The spelling of 121111021112120 in words is "one hundred twenty-one trillion, one hundred eleven billion, twenty-one million, one hundred twelve thousand, one hundred twenty".