21001012202302 has 32 divisors (see below), whose sum is σ = 34454074837248. Its totient is φ = 9521257200000.

The previous prime is 21001012202257. The next prime is 21001012202309. The reversal of 21001012202302 is 20320221010012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21001012202309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104272477 + ... + 104473687.

It is an arithmetic number, because the mean of its divisors is an integer number (1076689838664).

Almost surely, 2^{21001012202302} is an apocalyptic number.

21001012202302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21001012202302 is a deficient number, since it is larger than the sum of its proper divisors (13453062634946).

21001012202302 is a wasteful number, since it uses less digits than its factorization.

21001012202302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213456.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21001012202302 its reverse (20320221010012), we get a palindrome (41321233212314).

The spelling of 21001012202302 in words is "twenty-one trillion, one billion, twelve million, two hundred two thousand, three hundred two".