20100222121210 has 128 divisors (see below), whose sum is σ = 48234333288960. Its totient is φ = 5838093312000.

The previous prime is 20100222121141. The next prime is 20100222121219. The reversal of 20100222121210 is 1212122200102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20100222121219) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6279595 + ... + 8923774.

It is an arithmetic number, because the mean of its divisors is an integer number (376830728820).

Almost surely, 2^{20100222121210} is an apocalyptic number.

20100222121210 is an abundant number, since it is smaller than the sum of its proper divisors (28134111167750).

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

20100222121210 is a wasteful number, since it uses less digits than its factorization.

20100222121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15203512.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20100222121210 its reverse (1212122200102), we get a palindrome (21312344321312).

The spelling of 20100222121210 in words is "twenty trillion, one hundred billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred ten".