2121040022101 has 24 divisors (see below), whose sum is σ = 2869404444032. Its totient is φ = 1525623184800.

The previous prime is 2121040022093. The next prime is 2121040022107. The reversal of 2121040022101 is 1012200401212.

It is not a de Polignac number, because 2121040022101 - 2³ = 2121040022093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121040022107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96303585 + ... + 96325606.

Almost surely, 2^{2121040022101} is an apocalyptic number.

It is an amenable number.

2121040022101 is a deficient number, since it is larger than the sum of its proper divisors (748364421931).

2121040022101 is a wasteful number, since it uses less digits than its factorization.

2121040022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192629233 (or 192629222 counting only the distinct ones).

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

Adding to 2121040022101 its reverse (1012200401212), we get a palindrome (3133240423313).

The spelling of 2121040022101 in words is "two trillion, one hundred twenty-one billion, forty million, twenty-two thousand, one hundred one".