21373229802 has 16 divisors (see below), whose sum is σ = 42752472480. Its totient is φ = 7123407792.

The previous prime is 21373229797. The next prime is 21373229807. The reversal of 21373229802 is 20892237312.

It is an interprime number because it is at equal distance from previous prime (21373229797) and next prime (21373229807).

It is not an unprimeable number, because it can be changed into a prime (21373229807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203652 + ... + 290207.

It is an arithmetic number, because the mean of its divisors is an integer number (2672029530).

Almost surely, 2^21373229802 is an apocalyptic number.

21373229802 is an abundant number, since it is smaller than the sum of its proper divisors (21379242678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21373229802 is a wasteful number, since it uses less digits than its factorization.

21373229802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501077.

The product of its (nonzero) digits is 72576, while the sum is 39.

The spelling of 21373229802 in words is "twenty-one billion, three hundred seventy-three million, two hundred twenty-nine thousand, eight hundred two".