121021211120 has 20 divisors (see below), whose sum is σ = 281374316040. Its totient is φ = 48408484416.

The previous prime is 121021211093. The next prime is 121021211161. The reversal of 121021211120 is 21112120121.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×121021211120² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121021211095 and 121021211104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756382490 + ... + 756382649.

It is an arithmetic number, because the mean of its divisors is an integer number (14068715802).

Almost surely, 2^121021211120 is an apocalyptic number.

121021211120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121021211120 is an abundant number, since it is smaller than the sum of its proper divisors (160353104920).

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

121021211120 is a wasteful number, since it uses less digits than its factorization.

121021211120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512765152 (or 1512765146 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121021211120 its reverse (21112120121), we get a palindrome (142133331241).

Subtracting from 121021211120 its reverse (21112120121), we obtain a palindrome (99909090999).

The spelling of 121021211120 in words is "one hundred twenty-one billion, twenty-one million, two hundred eleven thousand, one hundred twenty".