100100222121204 has 72 divisors (see below), whose sum is σ = 254348852546880. Its totient is φ = 33192982490112.

The previous prime is 100100222121203. The next prime is 100100222121209. The reversal of 100100222121204 is 402121222001001.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100100222121203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297477219 + ... + 297813525.

It is an arithmetic number, because the mean of its divisors is an integer number (3532622952040).

Almost surely, 2^{100100222121204} is an apocalyptic number.

It is an amenable number.

100100222121204 is an abundant number, since it is smaller than the sum of its proper divisors (154248630425676).

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

100100222121204 is a wasteful number, since it uses less digits than its factorization.

100100222121204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379349 (or 379344 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 100100222121204 its reverse (402121222001001), we get a palindrome (502221444122205).

The spelling of 100100222121204 in words is "one hundred trillion, one hundred billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred four".