21133213331312 has 10 divisors (see below), whose sum is σ = 40945600829448. Its totient is φ = 10566606665648.

The previous prime is 21133213331309. The next prime is 21133213331341. The reversal of 21133213331312 is 21313331233112.

It is a super-2 number, since 2×21133213331312² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660412916588 + ... + 660412916619.

Almost surely, 2^{21133213331312} is an apocalyptic number.

It is an amenable number.

21133213331312 is a deficient number, since it is larger than the sum of its proper divisors (19812387498136).

21133213331312 is a wasteful number, since it uses less digits than its factorization.

21133213331312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320825833215 (or 1320825833209 counting only the distinct ones).

The product of its digits is 5832, while the sum is 29.

Adding to 21133213331312 its reverse (21313331233112), we get a palindrome (42446544564424).

The spelling of 21133213331312 in words is "twenty-one trillion, one hundred thirty-three billion, two hundred thirteen million, three hundred thirty-one thousand, three hundred twelve".