21122356115304 has 40 divisors (see below), whose sum is σ = 59162154861810. Its totient is φ = 7040785371552.

The previous prime is 21122356115293. The next prime is 21122356115339. The reversal of 21122356115304 is 40351165322112.

21122356115304 is a `hidden beast` number, since 2 + 1 + 1 + 2 + 2 + 3 + 5 + 611 + 5 + 30 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19225681784100 + 1896674331204 = 4384710^2 + 1377198^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16298113639 + ... + 16298114934.

Almost surely, 2^{21122356115304} is an apocalyptic number.

21122356115304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21122356115304 is an abundant number, since it is smaller than the sum of its proper divisors (38039798746506).

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

21122356115304 is a wasteful number, since it uses less digits than its factorization.

21122356115304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32596228591 (or 32596228578 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 21122356115304 in words is "twenty-one trillion, one hundred twenty-two billion, three hundred fifty-six million, one hundred fifteen thousand, three hundred four".