3201122400021 has 48 divisors (see below), whose sum is σ = 5694803028096. Its totient is φ = 1687341414528.

The previous prime is 3201122400019. The next prime is 3201122400029. The reversal of 3201122400021 is 1200042211023.

It is a happy number.

It is not a de Polignac number, because 3201122400021 - 2¹ = 3201122400019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3201122399967 and 3201122400003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201122400029) 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, 154995 + ... + 2535008.

It is an arithmetic number, because the mean of its divisors is an integer number (118641729752).

Almost surely, 2^{3201122400021} is an apocalyptic number.

It is an amenable number.

3201122400021 is a deficient number, since it is larger than the sum of its proper divisors (2493680628075).

3201122400021 is a wasteful number, since it uses less digits than its factorization.

3201122400021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691482 (or 2691479 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 3201122400021 its reverse (1200042211023), we get a palindrome (4401164611044).

The spelling of 3201122400021 in words is "three trillion, two hundred one billion, one hundred twenty-two million, four hundred thousand, twenty-one".