100212144155 has 16 divisors (see below), whose sum is σ = 120941952768. Its totient is φ = 79711632000.

The previous prime is 100212144107. The next prime is 100212144157. The reversal of 100212144155 is 551441212001.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-100212144155 is a prime.

It is a super-2 number, since 2×100212144155² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100212144157) 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, 9289865 + ... + 9300645.

It is an arithmetic number, because the mean of its divisors is an integer number (7558872048).

Almost surely, 2^100212144155 is an apocalyptic number.

100212144155 is a deficient number, since it is larger than the sum of its proper divisors (20729808613).

100212144155 is a wasteful number, since it uses less digits than its factorization.

100212144155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21238.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 100212144155 its reverse (551441212001), we get a palindrome (651653356156).

The spelling of 100212144155 in words is "one hundred billion, two hundred twelve million, one hundred forty-four thousand, one hundred fifty-five".