2251221402462 has 32 divisors (see below), whose sum is σ = 4537075023360. Its totient is φ = 744635760960.

The previous prime is 2251221402461. The next prime is 2251221402503. The reversal of 2251221402462 is 2642041221522.

It is a super-2 number, since 2×2251221402462² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251221402461) 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, 15339643 + ... + 15485705.

It is an arithmetic number, because the mean of its divisors is an integer number (141783594480).

Almost surely, 2^{2251221402462} is an apocalyptic number.

2251221402462 is an abundant number, since it is smaller than the sum of its proper divisors (2285853620898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2251221402462 is a wasteful number, since it uses less digits than its factorization.

2251221402462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165808.

The product of its (nonzero) digits is 30720, while the sum is 33.

Adding to 2251221402462 its reverse (2642041221522), we get a palindrome (4893262623984).

The spelling of 2251221402462 in words is "two trillion, two hundred fifty-one billion, two hundred twenty-one million, four hundred two thousand, four hundred sixty-two".