21002342298 has 64 divisors (see below), whose sum is σ = 49065689088. Its totient is φ = 5869463040.

The previous prime is 21002342297. The next prime is 21002342363. The reversal of 21002342298 is 89224320012.

It is not an unprimeable number, because it can be changed into a prime (21002342293) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 350986 + ... + 406442.

It is an arithmetic number, because the mean of its divisors is an integer number (766651392).

Almost surely, 2^21002342298 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21002342298, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24532844544).

21002342298 is an abundant number, since it is smaller than the sum of its proper divisors (28063346790).

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

21002342298 is a wasteful number, since it uses less digits than its factorization.

21002342298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55667.

The product of its (nonzero) digits is 13824, while the sum is 33.

The spelling of 21002342298 in words is "twenty-one billion, two million, three hundred forty-two thousand, two hundred ninety-eight".