121022121020121 has 32 divisors (see below), whose sum is σ = 181070910224640. Its totient is φ = 79882435987200.

The previous prime is 121022121020113. The next prime is 121022121020173. The reversal of 121022121020121 is 121020121220121.

121022121020121 is a `hidden beast` number, since 1 + 2 + 10 + 221 + 210 + 201 + 21 = 666.

It is not a de Polignac number, because 121022121020121 - 2³ = 121022121020113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121022121020094 and 121022121020103.

It is not an unprimeable number, because it can be changed into a prime (121022121020191) 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, 18205725 + ... + 23947706.

It is an arithmetic number, because the mean of its divisors is an integer number (5658465944520).

Almost surely, 2^{121022121020121} is an apocalyptic number.

It is an amenable number.

121022121020121 is a deficient number, since it is larger than the sum of its proper divisors (60048789204519).

121022121020121 is a wasteful number, since it uses less digits than its factorization.

121022121020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42154494 (or 42154488 counting only the distinct ones).

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

Adding to 121022121020121 its reverse (121020121220121), we get a palindrome (242042242240242).

The spelling of 121022121020121 in words is "one hundred twenty-one trillion, twenty-two billion, one hundred twenty-one million, twenty thousand, one hundred twenty-one".