21050433020404 has 12 divisors (see below), whose sum is σ = 36838672224228. Its totient is φ = 10525098099200.

The previous prime is 21050433020399. The next prime is 21050433020431. The reversal of 21050433020404 is 40402033405012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17447345708004 + 3603087312400 = 4177002^2 + 1898180^2 .

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, 29202157 + ... + 29914324.

It is an arithmetic number, because the mean of its divisors is an integer number (3069889352019).

Almost surely, 2^{21050433020404} is an apocalyptic number.

It is an amenable number.

21050433020404 is a deficient number, since it is larger than the sum of its proper divisors (15788239203824).

21050433020404 is a wasteful number, since it uses less digits than its factorization.

21050433020404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59205506 (or 59205504 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 21050433020404 its reverse (40402033405012), we get a palindrome (61452466425416).

The spelling of 21050433020404 in words is "twenty-one trillion, fifty billion, four hundred thirty-three million, twenty thousand, four hundred four".