21020101302 has 16 divisors (see below), whose sum is σ = 43176424752. Its totient is φ = 6817330080.

The previous prime is 21020101301. The next prime is 21020101309. The reversal of 21020101302 is 20310102012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020101301) 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, 47342349 + ... + 47342792.

It is an arithmetic number, because the mean of its divisors is an integer number (2698526547).

Almost surely, 2^21020101302 is an apocalyptic number.

21020101302 is an abundant number, since it is smaller than the sum of its proper divisors (22156323450).

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

21020101302 is a wasteful number, since it uses less digits than its factorization.

21020101302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94685183.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21020101302 its reverse (20310102012), we get a palindrome (41330203314).

The spelling of 21020101302 in words is "twenty-one billion, twenty million, one hundred one thousand, three hundred two".