21002838302 has 4 divisors (see below), whose sum is σ = 31504257456. Its totient is φ = 10501419150.

The previous prime is 21002838277. The next prime is 21002838319. The reversal of 21002838302 is 20383820012.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×21002838302² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5250709574 + ... + 5250709577.

It is an arithmetic number, because the mean of its divisors is an integer number (7876064364).

Almost surely, 2^21002838302 is an apocalyptic number.

21002838302 is a deficient number, since it is larger than the sum of its proper divisors (10501419154).

21002838302 is a wasteful number, since it uses less digits than its factorization.

21002838302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10501419153.

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 21002838302 in words is "twenty-one billion, two million, eight hundred thirty-eight thousand, three hundred two".