21002301213 has 32 divisors (see below), whose sum is σ = 29742336000. Its totient is φ = 13154049216.

The previous prime is 21002301181. The next prime is 21002301227. The reversal of 21002301213 is 31210320012.

It is not a de Polignac number, because 21002301213 - 2⁵ = 21002301181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21002301192 and 21002301201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002301013) 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, 7933056 + ... + 7935702.

It is an arithmetic number, because the mean of its divisors is an integer number (929448000).

Almost surely, 2^21002301213 is an apocalyptic number.

21002301213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21002301213 is a deficient number, since it is larger than the sum of its proper divisors (8740034787).

21002301213 is a wasteful number, since it uses less digits than its factorization.

21002301213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4681.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21002301213 its reverse (31210320012), we get a palindrome (52212621225).

The spelling of 21002301213 in words is "twenty-one billion, two million, three hundred one thousand, two hundred thirteen".