13002203021 has 4 divisors (see below), whose sum is σ = 13003213692. Its totient is φ = 13001192352.

The previous prime is 13002203017. The next prime is 13002203029. The reversal of 13002203021 is 12030220031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12030220031 = 20731 ⋅580301.

It can be written as a sum of positive squares in 2 ways, for example, as 3482298121 + 9519904900 = 59011^2 + 97570^2 .

It is a cyclic number.

It is not a de Polignac number, because 13002203021 - 2² = 13002203017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13002202987 and 13002203005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13002203029) 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, 485786 + ... + 511851.

It is an arithmetic number, because the mean of its divisors is an integer number (3250803423).

Almost surely, 2^13002203021 is an apocalyptic number.

It is an amenable number.

13002203021 is a deficient number, since it is larger than the sum of its proper divisors (1010671).

13002203021 is an equidigital number, since it uses as much as digits as its factorization.

13002203021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010670.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 13002203021 its reverse (12030220031), we get a palindrome (25032423052).

The spelling of 13002203021 in words is "thirteen billion, two million, two hundred three thousand, twenty-one".