121021011120 has 40 divisors (see below), whose sum is σ = 375165135216. Its totient is φ = 32272269568.

The previous prime is 121021010993. The next prime is 121021011127. The reversal of 121021011120 is 21110120121.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 121021011096 and 121021011105.

It is not an unprimeable number, because it can be changed into a prime (121021011127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252126867 + ... + 252127346.

Almost surely, 2^121021011120 is an apocalyptic number.

121021011120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121021011120 is an abundant number, since it is smaller than the sum of its proper divisors (254144124096).

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

121021011120 is a wasteful number, since it uses less digits than its factorization.

121021011120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504254229 (or 504254223 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121021011120 its reverse (21110120121), we get a palindrome (142131131241).

The spelling of 121021011120 in words is "one hundred twenty-one billion, twenty-one million, eleven thousand, one hundred twenty".