2101022022121 has 16 divisors (see below), whose sum is σ = 2427442777728. Its totient is φ = 1797226041600.

The previous prime is 2101022022119. The next prime is 2101022022161. The reversal of 2101022022121 is 1212202201012.

It is a happy number.

It is not a de Polignac number, because 2101022022121 - 2¹ = 2101022022119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101022022095 and 2101022022104.

It is not an unprimeable number, because it can be changed into a prime (2101022022101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 607125 + ... + 2137906.

It is an arithmetic number, because the mean of its divisors is an integer number (151715173608).

Almost surely, 2^{2101022022121} is an apocalyptic number.

It is an amenable number.

2101022022121 is a deficient number, since it is larger than the sum of its proper divisors (326420755607).

2101022022121 is a wasteful number, since it uses less digits than its factorization.

2101022022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749152.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2101022022121 its reverse (1212202201012), we get a palindrome (3313224223133).

The spelling of 2101022022121 in words is "two trillion, one hundred one billion, twenty-two million, twenty-two thousand, one hundred twenty-one".