20100221202 has 32 divisors (see below), whose sum is σ = 40470337152. Its totient is φ = 6655149824.

The previous prime is 20100221189. The next prime is 20100221209. The reversal of 20100221202 is 20212200102.

It is not an unprimeable number, because it can be changed into a prime (20100221209) 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, 1549648 + ... + 1562564.

It is an arithmetic number, because the mean of its divisors is an integer number (1264698036).

Almost surely, 2^20100221202 is an apocalyptic number.

20100221202 is an abundant number, since it is smaller than the sum of its proper divisors (20370115950).

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

20100221202 is a wasteful number, since it uses less digits than its factorization.

20100221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14642.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20100221202 its reverse (20212200102), we get a palindrome (40312421304).

The spelling of 20100221202 in words is "twenty billion, one hundred million, two hundred twenty-one thousand, two hundred two".