21000312233339 has 4 divisors (see below), whose sum is σ = 21000372784824. Its totient is φ = 21000251681856.

The previous prime is 21000312233323. The next prime is 21000312233393. The reversal of 21000312233339 is 93333221300012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21000312233339 - 2⁴ = 21000312233323 is a prime.

It is a super-2 number, since 2×21000312233339² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21000312233539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29752502 + ... + 30450155.

It is an arithmetic number, because the mean of its divisors is an integer number (5250093196206).

Almost surely, 2^{21000312233339} is an apocalyptic number.

21000312233339 is a deficient number, since it is larger than the sum of its proper divisors (60551485).

21000312233339 is an equidigital number, since it uses as much as digits as its factorization.

21000312233339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60551484.

The product of its (nonzero) digits is 17496, while the sum is 32.

The spelling of 21000312233339 in words is "twenty-one trillion, three hundred twelve million, two hundred thirty-three thousand, three hundred thirty-nine".