641203122 has 24 divisors (see below), whose sum is σ = 1491779376. Its totient is φ = 183200808.

The previous prime is 641203109. The next prime is 641203139. The reversal of 641203122 is 221302146.

It is a super-2 number, since 2×641203122² = 822282887325093768, which contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1090188 + ... + 1090775.

It is an arithmetic number, because the mean of its divisors is an integer number (62157474).

Almost surely, 2^641203122 is an apocalyptic number.

641203122 is an abundant number, since it is smaller than the sum of its proper divisors (850576254).

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

641203122 is a wasteful number, since it uses less digits than its factorization.

641203122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180982 (or 2180975 counting only the distinct ones).

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

The square root of 641203122 is about 25321.9889029278. The cubic root of 641203122 is about 862.3135479342.

Adding to 641203122 its reverse (221302146), we get a palindrome (862505268).

The spelling of 641203122 in words is "six hundred forty-one million, two hundred three thousand, one hundred twenty-two".