100122220144 has 20 divisors (see below), whose sum is σ = 194059079424. Its totient is φ = 50042457728.

The previous prime is 100122220139. The next prime is 100122220151. The reversal of 100122220144 is 441022221001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1121437 + ... + 1207420.

Almost surely, 2^100122220144 is an apocalyptic number.

It is an amenable number.

100122220144 is a deficient number, since it is larger than the sum of its proper divisors (93936859280).

100122220144 is a wasteful number, since it uses less digits than its factorization.

100122220144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331552 (or 2331546 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 100122220144 its reverse (441022221001), we get a palindrome (541144441145).

The spelling of 100122220144 in words is "one hundred billion, one hundred twenty-two million, two hundred twenty thousand, one hundred forty-four".