21002211302 has 4 divisors (see below), whose sum is σ = 31503316956. Its totient is φ = 10501105650.

The previous prime is 21002211271. The next prime is 21002211311. The reversal of 21002211302 is 20311220012.

It is a happy number.

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

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, 5250552824 + ... + 5250552827.

It is an arithmetic number, because the mean of its divisors is an integer number (7875829239).

Almost surely, 2^21002211302 is an apocalyptic number.

21002211302 is a deficient number, since it is larger than the sum of its proper divisors (10501105654).

21002211302 is a wasteful number, since it uses less digits than its factorization.

21002211302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10501105653.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21002211302 its reverse (20311220012), we get a palindrome (41313431314).

The spelling of 21002211302 in words is "twenty-one billion, two million, two hundred eleven thousand, three hundred two".