121022111120 has 20 divisors (see below), whose sum is σ = 281376408540. Its totient is φ = 48408844416.

The previous prime is 121022111113. The next prime is 121022111123. The reversal of 121022111120 is 21111220121.

It can be written as a sum of positive squares in 2 ways, for example, as 20814409984 + 100207701136 = 144272^2 + 316556^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 121022111095 and 121022111104.

It is not an unprimeable number, because it can be changed into a prime (121022111123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756388115 + ... + 756388274.

It is an arithmetic number, because the mean of its divisors is an integer number (14068820427).

Almost surely, 2^121022111120 is an apocalyptic number.

121022111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121022111120 is an abundant number, since it is smaller than the sum of its proper divisors (160354297420).

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

121022111120 is a wasteful number, since it uses less digits than its factorization.

121022111120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512776402 (or 1512776396 counting only the distinct ones).

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

Adding to 121022111120 its reverse (21111220121), we get a palindrome (142133331241).

The spelling of 121022111120 in words is "one hundred twenty-one billion, twenty-two million, one hundred eleven thousand, one hundred twenty".