21122301310020 has 36 divisors (see below), whose sum is σ = 64070980640940. Its totient is φ = 5632613682624.

The previous prime is 21122301310009. The next prime is 21122301310021. The reversal of 21122301310020 is 2001310322112.

21122301310020 is a `hidden beast` number, since 2 + 11 + 22 + 301 + 310 + 0 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9554738473476 + 11567562836544 = 3091074^2 + 3401112^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×21122301310020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21122301309975 and 21122301310002.

It is not an unprimeable number, because it can be changed into a prime (21122301310021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58673059015 + ... + 58673059374.

Almost surely, 2^{21122301310020} is an apocalyptic number.

21122301310020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21122301310020 is an abundant number, since it is smaller than the sum of its proper divisors (42948679330920).

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

21122301310020 is a wasteful number, since it uses less digits than its factorization.

21122301310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117346118404 (or 117346118399 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21122301310020 its reverse (2001310322112), we get a palindrome (23123611632132).

The spelling of 21122301310020 in words is "twenty-one trillion, one hundred twenty-two billion, three hundred one million, three hundred ten thousand, twenty".