121021001120 has 48 divisors (see below), whose sum is σ = 285933450600. Its totient is φ = 48404788224.

The previous prime is 121021001119. The next prime is 121021001149. The reversal of 121021001120 is 21100120121.

It can be written as a sum of positive squares in 4 ways, for example, as 120873038224 + 147962896 = 347668^2 + 12164^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3485606 + ... + 3520154.

Almost surely, 2^121021001120 is an apocalyptic number.

121021001120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121021001120 is an abundant number, since it is smaller than the sum of its proper divisors (164912449480).

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

121021001120 is a wasteful number, since it uses less digits than its factorization.

121021001120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56457 (or 56449 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121021001120 its reverse (21100120121), we get a palindrome (142121121241).

The spelling of 121021001120 in words is "one hundred twenty-one billion, twenty-one million, one thousand, one hundred twenty".