100212144156 has 18 divisors (see below), whose sum is σ = 253314031152. Its totient is φ = 33404048040.

The previous prime is 100212144107. The next prime is 100212144157. The reversal of 100212144156 is 651441212001.

100212144156 is a `hidden beast` number, since 1 + 0 + 0 + 212 + 1 + 441 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 1391835300 + ... + 1391835371.

Almost surely, 2^100212144156 is an apocalyptic number.

It is an amenable number.

100212144156 is an abundant number, since it is smaller than the sum of its proper divisors (153101886996).

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

100212144156 is a wasteful number, since it uses less digits than its factorization.

100212144156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783670681 (or 2783670676 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 100212144156 its reverse (651441212001), we get a palindrome (751653356157).

The spelling of 100212144156 in words is "one hundred billion, two hundred twelve million, one hundred forty-four thousand, one hundred fifty-six".