631222122000 has 80 divisors (see below), whose sum is σ = 2035060140672. Its totient is φ = 168325897600.

The previous prime is 631222121989. The next prime is 631222122017. The reversal of 631222122000 is 221222136.

It is a tau number, because it is divible by the number of its divisors (80).

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 15 ways as a sum of consecutive naturals, for example, 52595844 + ... + 52607843.

Almost surely, 2^631222122000 is an apocalyptic number.

631222122000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

631222122000 is an abundant number, since it is smaller than the sum of its proper divisors (1403838018672).

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

631222122000 is a wasteful number, since it uses less digits than its factorization.

631222122000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105203713 (or 105203697 counting only the distinct ones).

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

Adding to 631222122000 its reverse (221222136), we get a palindrome (631443344136).

The spelling of 631222122000 in words is "six hundred thirty-one billion, two hundred twenty-two million, one hundred twenty-two thousand".