21122102212000 has 48 divisors (see below), whose sum is σ = 51897005144712. Its totient is φ = 8448840883200.

The previous prime is 21122102211983. The next prime is 21122102212027. The reversal of 21122102212000 is 21220122112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3577832778256 + 17544269433744 = 1891516^2 + 4188588^2 .

It is a super-2 number, since 2×21122102212000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 2640258777 + ... + 2640266776.

Almost surely, 2^{21122102212000} is an apocalyptic number.

21122102212000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21122102212000 is an abundant number, since it is smaller than the sum of its proper divisors (30774902932712).

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

21122102212000 is an equidigital number, since it uses as much as digits as its factorization.

21122102212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5280525578 (or 5280525560 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21122102212000 its reverse (21220122112), we get a palindrome (21143322334112).

The spelling of 21122102212000 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred two million, two hundred twelve thousand".