21105354224030 has 8 divisors (see below), whose sum is σ = 37989637603272. Its totient is φ = 8442141689608.

The previous prime is 21105354224029. The next prime is 21105354224069. The reversal of 21105354224030 is 3042245350112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055267711192 + ... + 1055267711211.

It is an arithmetic number, because the mean of its divisors is an integer number (4748704700409).

Almost surely, 2^{21105354224030} is an apocalyptic number.

21105354224030 is a deficient number, since it is larger than the sum of its proper divisors (16884283379242).

21105354224030 is a wasteful number, since it uses less digits than its factorization.

21105354224030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110535422410.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 21105354224030 its reverse (3042245350112), we get a palindrome (24147599574142).

The spelling of 21105354224030 in words is "twenty-one trillion, one hundred five billion, three hundred fifty-four million, two hundred twenty-four thousand, thirty".