21001323323002 has 96 divisors (see below), whose sum is σ = 35851716633600. Its totient is φ = 9213265459200.

The previous prime is 21001323322979. The next prime is 21001323323039. The reversal of 21001323323002 is 20032332310012.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4376184999 + ... + 4376189797.

It is an arithmetic number, because the mean of its divisors is an integer number (373455381600).

Almost surely, 2^{21001323323002} is an apocalyptic number.

21001323323002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21001323323002 is a deficient number, since it is larger than the sum of its proper divisors (14850393310598).

21001323323002 is a wasteful number, since it uses less digits than its factorization.

21001323323002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9508 (or 9497 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21001323323002 its reverse (20032332310012), we get a palindrome (41033655633014).

The spelling of 21001323323002 in words is "twenty-one trillion, one billion, three hundred twenty-three million, three hundred twenty-three thousand, two".