21121000464304 has 40 divisors (see below), whose sum is σ = 44136451478672. Its totient is φ = 9733406411520.

The previous prime is 21121000464269. The next prime is 21121000464401. The reversal of 21121000464304 is 40346400012112.

It is a super-2 number, since 2×21121000464304² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76672854 + ... + 76947829.

Almost surely, 2^{21121000464304} is an apocalyptic number.

It is an amenable number.

21121000464304 is an abundant number, since it is smaller than the sum of its proper divisors (23015451014368).

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

21121000464304 is a wasteful number, since it uses less digits than its factorization.

21121000464304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153621365 (or 153621359 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 21121000464304 its reverse (40346400012112), we get a palindrome (61467400476416).

The spelling of 21121000464304 in words is "twenty-one trillion, one hundred twenty-one billion, four hundred sixty-four thousand, three hundred four".