21031021322302 has 4 divisors (see below), whose sum is σ = 31546531983456. Its totient is φ = 10515510661150.

The previous prime is 21031021322293. The next prime is 21031021322351. The reversal of 21031021322302 is 20322312013012.

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, 5257755330574 + ... + 5257755330577.

It is an arithmetic number, because the mean of its divisors is an integer number (7886632995864).

Almost surely, 2^{21031021322302} is an apocalyptic number.

21031021322302 is a deficient number, since it is larger than the sum of its proper divisors (10515510661154).

21031021322302 is a wasteful number, since it uses less digits than its factorization.

21031021322302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10515510661153.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21031021322302 its reverse (20322312013012), we get a palindrome (41353333335314).

The spelling of 21031021322302 in words is "twenty-one trillion, thirty-one billion, twenty-one million, three hundred twenty-two thousand, three hundred two".