100201102121138 has 16 divisors (see below), whose sum is σ = 167518870420320. Its totient is φ = 44671698778176.

The previous prime is 100201102121137. The next prime is 100201102121209. The reversal of 100201102121138 is 831121201102001.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (100201102121137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77555031956 + ... + 77555033247.

It is an arithmetic number, because the mean of its divisors is an integer number (10469929401270).

Almost surely, 2^{100201102121138} is an apocalyptic number.

100201102121138 is a deficient number, since it is larger than the sum of its proper divisors (67317768299182).

100201102121138 is a wasteful number, since it uses less digits than its factorization.

100201102121138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155110065241.

The product of its (nonzero) digits is 192, while the sum is 23.

Adding to 100201102121138 its reverse (831121201102001), we get a palindrome (931322303223139).

The spelling of 100201102121138 in words is "one hundred trillion, two hundred one billion, one hundred two million, one hundred twenty-one thousand, one hundred thirty-eight".