121121102021120 has 80 divisors (see below), whose sum is σ = 291284131140288. Its totient is φ = 48302070558720.

The previous prime is 121121102021099. The next prime is 121121102021147. The reversal of 121121102021120 is 21120201121121.

It is a tau number, because it is divible by the number of its divisors (80).

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, 70622324 + ... + 72317043.

Almost surely, 2^{121121102021120} is an apocalyptic number.

121121102021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121121102021120 is an abundant number, since it is smaller than the sum of its proper divisors (170163029119168).

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

121121102021120 is an equidigital number, since it uses as much as digits as its factorization.

121121102021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142939721 (or 142939705 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121121102021120 its reverse (21120201121121), we get a palindrome (142241303142241).

The spelling of 121121102021120 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred two million, twenty-one thousand, one hundred twenty".