21125353322030 has 32 divisors (see below), whose sum is σ = 39087286594560. Its totient is φ = 8214615820800.

The previous prime is 21125353321889. The next prime is 21125353322039. The reversal of 21125353322030 is 3022335352112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21125353322039) 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, 24376715 + ... + 25228454.

It is an arithmetic number, because the mean of its divisors is an integer number (1221477706080).

Almost surely, 2^{21125353322030} is an apocalyptic number.

21125353322030 is a deficient number, since it is larger than the sum of its proper divisors (17961933272530).

21125353322030 is a wasteful number, since it uses less digits than its factorization.

21125353322030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49606364.

The product of its (nonzero) digits is 32400, while the sum is 32.

Adding to 21125353322030 its reverse (3022335352112), we get a palindrome (24147688674142).

The spelling of 21125353322030 in words is "twenty-one trillion, one hundred twenty-five billion, three hundred fifty-three million, three hundred twenty-two thousand, thirty".