102133321303021 has 4 divisors (see below), whose sum is σ = 102135317822332. Its totient is φ = 102131324783712.

The previous prime is 102133321302997. The next prime is 102133321303031. The reversal of 102133321303021 is 120303123331201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 97234686385225 + 4898634917796 = 9860765^2 + 2213286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102133321303021 is a prime.

It is a super-2 number, since 2×102133321303021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102133321303031) 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, 998182920 + ... + 998285233.

It is an arithmetic number, because the mean of its divisors is an integer number (25533829455583).

Almost surely, 2^{102133321303021} is an apocalyptic number.

It is an amenable number.

102133321303021 is a deficient number, since it is larger than the sum of its proper divisors (1996519311).

102133321303021 is an equidigital number, since it uses as much as digits as its factorization.

102133321303021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996519310.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 102133321303021 its reverse (120303123331201), we get a palindrome (222436444634222).

The spelling of 102133321303021 in words is "one hundred two trillion, one hundred thirty-three billion, three hundred twenty-one million, three hundred three thousand, twenty-one".