21210023302 has 16 divisors (see below), whose sum is σ = 34413290352. Its totient is φ = 9746114400.

The previous prime is 21210023299. The next prime is 21210023311. The reversal of 21210023302 is 20332001212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1790949 + ... + 1802752.

It is an arithmetic number, because the mean of its divisors is an integer number (2150830647).

Almost surely, 2^21210023302 is an apocalyptic number.

21210023302 is a deficient number, since it is larger than the sum of its proper divisors (13203267050).

21210023302 is a wasteful number, since it uses less digits than its factorization.

21210023302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3593943.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21210023302 its reverse (20332001212), we get a palindrome (41542024514).

The spelling of 21210023302 in words is "twenty-one billion, two hundred ten million, twenty-three thousand, three hundred two".