21101230331202 has 48 divisors (see below), whose sum is σ = 49126492986912. Its totient is φ = 6024767817600.

The previous prime is 21101230331141. The next prime is 21101230331257. The reversal of 21101230331202 is 20213303210112.

It is a super-2 number, since 2×21101230331202² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24305623 + ... + 25158810.

It is an arithmetic number, because the mean of its divisors is an integer number (1023468603894).

Almost surely, 2^{21101230331202} is an apocalyptic number.

21101230331202 is an abundant number, since it is smaller than the sum of its proper divisors (28025262655710).

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

21101230331202 is a wasteful number, since it uses less digits than its factorization.

21101230331202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49465903 (or 49465896 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21101230331202 its reverse (20213303210112), we get a palindrome (41314533541314).

The spelling of 21101230331202 in words is "twenty-one trillion, one hundred one billion, two hundred thirty million, three hundred thirty-one thousand, two hundred two".