100012211442 has 72 divisors (see below), whose sum is σ = 256505220972. Its totient is φ = 27975435840.

The previous prime is 100012211413. The next prime is 100012211461. The reversal of 100012211442 is 244112210001.

100012211442 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 1 + 221 + 1 + 442 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 99798496281 + 213715161 = 315909^2 + 14619^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1737813 + ... + 1794440.

Almost surely, 2^100012211442 is an apocalyptic number.

100012211442 is an abundant number, since it is smaller than the sum of its proper divisors (156493009530).

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

100012211442 is a wasteful number, since it uses less digits than its factorization.

100012211442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532296 (or 3532282 counting only the distinct ones).

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

Adding to 100012211442 its reverse (244112210001), we get a palindrome (344124421443).

The spelling of 100012211442 in words is "one hundred billion, twelve million, two hundred eleven thousand, four hundred forty-two".