20100021122202 has 96 divisors (see below), whose sum is σ = 47262673649664. Its totient is φ = 5681803327200.

The previous prime is 20100021122201. The next prime is 20100021122213. The reversal of 20100021122202 is 20222112000102.

It is a super-2 number, since 2×20100021122202² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20100021122201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11959783 + ... + 13536485.

It is an arithmetic number, because the mean of its divisors is an integer number (492319517184).

Almost surely, 2^{20100021122202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20100021122202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23631336824832).

20100021122202 is an abundant number, since it is smaller than the sum of its proper divisors (27162652527462).

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

20100021122202 is a wasteful number, since it uses less digits than its factorization.

20100021122202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577184 (or 1577177 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20100021122202 its reverse (20222112000102), we get a palindrome (40322133122304).

The spelling of 20100021122202 in words is "twenty trillion, one hundred billion, twenty-one million, one hundred twenty-two thousand, two hundred two".