100121222220222 has 32 divisors (see below), whose sum is σ = 228857668300800. Its totient is φ = 28604918445408.

The previous prime is 100121222220163. The next prime is 100121222220259. The reversal of 100121222220222 is 222022222121001.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46648222 + ... + 48747297.

It is an arithmetic number, because the mean of its divisors is an integer number (7151802134400).

Almost surely, 2^{100121222220222} is an apocalyptic number.

100121222220222 is an abundant number, since it is smaller than the sum of its proper divisors (128736446080578).

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

100121222220222 is a wasteful number, since it uses less digits than its factorization.

100121222220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95420520.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 100121222220222 its reverse (222022222121001), we get a palindrome (322143444341223).

The spelling of 100121222220222 in words is "one hundred trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred twenty thousand, two hundred twenty-two".