21229345802 has 32 divisors (see below), whose sum is σ = 37305757440. Its totient is φ = 8870440320.

The previous prime is 21229345801. The next prime is 21229345847. The reversal of 21229345802 is 20854392212.

It is not an unprimeable number, because it can be changed into a prime (21229345801) 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, 905099 + ... + 928257.

It is an arithmetic number, because the mean of its divisors is an integer number (1165804920).

Almost surely, 2^21229345802 is an apocalyptic number.

21229345802 is a deficient number, since it is larger than the sum of its proper divisors (16076411638).

21229345802 is a wasteful number, since it uses less digits than its factorization.

21229345802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24806.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 21229345802 in words is "twenty-one billion, two hundred twenty-nine million, three hundred forty-five thousand, eight hundred two".