21010023302 has 32 divisors (see below), whose sum is σ = 33681899520. Its totient is φ = 9806848480.

The previous prime is 21010023301. The next prime is 21010023311. The reversal of 21010023302 is 20332001012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010023301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 443099 + ... + 488217.

It is an arithmetic number, because the mean of its divisors is an integer number (1052559360).

Almost surely, 2^21010023302 is an apocalyptic number.

21010023302 is a deficient number, since it is larger than the sum of its proper divisors (12671876218).

21010023302 is a wasteful number, since it uses less digits than its factorization.

21010023302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45388.

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

Adding to 21010023302 its reverse (20332001012), we get a palindrome (41342024314).

The spelling of 21010023302 in words is "twenty-one billion, ten million, twenty-three thousand, three hundred two".