21425603122 has 32 divisors (see below), whose sum is σ = 40135503744. Its totient is φ = 8333712000.

The previous prime is 21425603119. The next prime is 21425603197. The reversal of 21425603122 is 22130652412.

It is a super-2 number, since 2×21425603122² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23193 + ... + 208300.

It is an arithmetic number, because the mean of its divisors is an integer number (1254234492).

Almost surely, 2^21425603122 is an apocalyptic number.

21425603122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21425603122 is a deficient number, since it is larger than the sum of its proper divisors (18709900622).

21425603122 is a wasteful number, since it uses less digits than its factorization.

21425603122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232114.

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 21425603122 in words is "twenty-one billion, four hundred twenty-five million, six hundred three thousand, one hundred twenty-two".