21000329622 has 32 divisors (see below), whose sum is σ = 46673148000. Its totient is φ = 6999247584.

The previous prime is 21000329621. The next prime is 21000329629. The reversal of 21000329622 is 22692300012.

21000329622 is a `hidden beast` number, since 2 + 1 + 0 + 0 + 0 + 32 + 9 + 622 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000329621) 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, 540504 + ... + 578052.

It is an arithmetic number, because the mean of its divisors is an integer number (1458535875).

Almost surely, 2^21000329622 is an apocalyptic number.

21000329622 is an abundant number, since it is smaller than the sum of its proper divisors (25672818378).

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

21000329622 is a wasteful number, since it uses less digits than its factorization.

21000329622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47917 (or 47911 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 21000329622 its reverse (22692300012), we get a palindrome (43692629634).

The spelling of 21000329622 in words is "twenty-one billion, three hundred twenty-nine thousand, six hundred twenty-two".