2021130122121 has 12 divisors (see below), whose sum is σ = 3184811101680. Its totient is φ = 1224927346680.

The previous prime is 2021130122113. The next prime is 2021130122131. The reversal of 2021130122121 is 1212210311202.

It is not a de Polignac number, because 2021130122121 - 2³ = 2021130122113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021130122094 and 2021130122103.

It is not an unprimeable number, because it can be changed into a prime (2021130122131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10207727791 + ... + 10207727988.

It is an arithmetic number, because the mean of its divisors is an integer number (265400925140).

Almost surely, 2^{2021130122121} is an apocalyptic number.

It is an amenable number.

2021130122121 is a deficient number, since it is larger than the sum of its proper divisors (1163680979559).

2021130122121 is a wasteful number, since it uses less digits than its factorization.

2021130122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20415455796 (or 20415455793 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2021130122121 its reverse (1212210311202), we get a palindrome (3233340433323).

The spelling of 2021130122121 in words is "two trillion, twenty-one billion, one hundred thirty million, one hundred twenty-two thousand, one hundred twenty-one".