21323100010212 has 288 divisors, whose sum is σ = 74325241046784. Its totient is φ = 4974257433600.

The previous prime is 21323100010171. The next prime is 21323100010273. The reversal of 21323100010212 is 21201000132312.

21323100010212 is a `hidden beast` number, since 2 + 132 + 310 + 0 + 0 + 10 + 212 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6662839 + ... + 9329502.

Almost surely, 2^{21323100010212} is an apocalyptic number.

21323100010212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21323100010212 is an abundant number, since it is smaller than the sum of its proper divisors (53002141036572).

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

21323100010212 is a wasteful number, since it uses less digits than its factorization.

21323100010212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15992419 (or 15992414 counting only the distinct ones).

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

Adding to 21323100010212 its reverse (21201000132312), we get a palindrome (42524100142524).

The spelling of 21323100010212 in words is "twenty-one trillion, three hundred twenty-three billion, one hundred million, ten thousand, two hundred twelve".