121012120221021 has 48 divisors (see below), whose sum is σ = 179419694837760. Its totient is φ = 78573504280320.

The previous prime is 121012120221001. The next prime is 121012120221029. The reversal of 121012120221021 is 120122021210121.

121012120221021 is a `hidden beast` number, since 1 + 210 + 1 + 21 + 202 + 210 + 21 = 666.

It is not a de Polignac number, because 121012120221021 - 2⁵ = 121012120220989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121012120220985 and 121012120221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012120221029) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15708735 + ... + 22108563.

It is an arithmetic number, because the mean of its divisors is an integer number (3737910309120).

Almost surely, 2^{121012120221021} is an apocalyptic number.

It is an amenable number.

121012120221021 is a deficient number, since it is larger than the sum of its proper divisors (58407574616739).

121012120221021 is a wasteful number, since it uses less digits than its factorization.

121012120221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6400266 (or 6400263 counting only the distinct ones).

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

Adding to 121012120221021 its reverse (120122021210121), we get a palindrome (241134141431142).

The spelling of 121012120221021 in words is "one hundred twenty-one trillion, twelve billion, one hundred twenty million, two hundred twenty-one thousand, twenty-one".