100120002121146 has 32 divisors (see below), whose sum is σ = 232724460142080. Its totient is φ = 28120872265776.

The previous prime is 100120002121049. The next prime is 100120002121147. The reversal of 100120002121146 is 641121200021001.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100120002121147) 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, 20201773576 + ... + 20201778531.

It is an arithmetic number, because the mean of its divisors is an integer number (7272639379440).

Almost surely, 2^{100120002121146} is an apocalyptic number.

100120002121146 is an abundant number, since it is smaller than the sum of its proper divisors (132604458020934).

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

100120002121146 is a wasteful number, since it uses less digits than its factorization.

100120002121146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40403552178.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 100120002121146 its reverse (641121200021001), we get a palindrome (741241202142147).

The spelling of 100120002121146 in words is "one hundred trillion, one hundred twenty billion, two million, one hundred twenty-one thousand, one hundred forty-six".