63121422 has 64 divisors (see below), whose sum is σ = 156441600. Its totient is φ = 16533504.

The previous prime is 63121351. The next prime is 63121451. The reversal of 63121422 is 22412136.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105079 + ... + 105677.

It is an arithmetic number, because the mean of its divisors is an integer number (2444400).

Almost surely, 2^63121422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63121422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78220800).

63121422 is an abundant number, since it is smaller than the sum of its proper divisors (93320178).

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

63121422 is a wasteful number, since it uses less digits than its factorization.

63121422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817.

The product of its digits is 576, while the sum is 21.

The square root of 63121422 is about 7944.8991183023. The cubic root of 63121422 is about 398.1611890554.

Adding to 63121422 its reverse (22412136), we get a palindrome (85533558).

The spelling of 63121422 in words is "sixty-three million, one hundred twenty-one thousand, four hundred twenty-two".