21020202212000 has 48 divisors (see below), whose sum is σ = 51646636844712. Its totient is φ = 8408080883200.

The previous prime is 21020202211979. The next prime is 21020202212021. The reversal of 21020202212000 is 21220202012.

It is an interprime number because it is at equal distance from previous prime (21020202211979) and next prime (21020202212021).

It can be written as a sum of positive squares in 4 ways, for example, as 4296715413904 + 16723486798096 = 2072852^2 + 4089436^2 .

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, 2627521277 + ... + 2627529276.

Almost surely, 2^{21020202212000} is an apocalyptic number.

21020202212000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21020202212000 is an abundant number, since it is smaller than the sum of its proper divisors (30626434632712).

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

21020202212000 is an equidigital number, since it uses as much as digits as its factorization.

21020202212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5255050578 (or 5255050560 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21020202212000 its reverse (21220202012), we get a palindrome (21041422414012).

The spelling of 21020202212000 in words is "twenty-one trillion, twenty billion, two hundred two million, two hundred twelve thousand".