121120121022021 has 32 divisors (see below), whose sum is σ = 195750690508800. Its totient is φ = 73405758965040.

The previous prime is 121120121021959. The next prime is 121120121022071. The reversal of 121120121022021 is 120220121021121.

121120121022021 is a `hidden beast` number, since 1 + 2 + 11 + 201 + 210 + 220 + 21 = 666.

It is not a de Polignac number, because 121120121022021 - 2⁴² = 116722074510917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121120121021985 and 121120121022003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121120121022071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64027270 + ... + 65891816.

It is an arithmetic number, because the mean of its divisors is an integer number (6117209078400).

Almost surely, 2^{121120121022021} is an apocalyptic number.

121120121022021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121120121022021 is a deficient number, since it is larger than the sum of its proper divisors (74630569486779).

121120121022021 is a wasteful number, since it uses less digits than its factorization.

121120121022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083286 (or 2083280 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121120121022021 its reverse (120220121021121), we get a palindrome (241340242043142).

It can be divided in two parts, 1211201 and 21022021, that added together give a palindrome (22233222).

The spelling of 121120121022021 in words is "one hundred twenty-one trillion, one hundred twenty billion, one hundred twenty-one million, twenty-two thousand, twenty-one".