100200012121001 has 4 divisors (see below), whose sum is σ = 107907705361092. Its totient is φ = 92492318880912.

The previous prime is 100200012120973. The next prime is 100200012121009. The reversal of 100200012121001 is 100121210002001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66938251296400 + 33261760824601 = 8181580^2 + 5767301^2 .

It is a cyclic number.

It is not a de Polignac number, because 100200012121001 - 2¹⁴ = 100200012104617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100200012121009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3853846620026 + ... + 3853846620051.

It is an arithmetic number, because the mean of its divisors is an integer number (26976926340273).

Almost surely, 2^{100200012121001} is an apocalyptic number.

It is an amenable number.

100200012121001 is a deficient number, since it is larger than the sum of its proper divisors (7707693240091).

100200012121001 is an equidigital number, since it uses as much as digits as its factorization.

100200012121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7707693240090.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100200012121001 its reverse (100121210002001), we get a palindrome (200321222123002).

The spelling of 100200012121001 in words is "one hundred trillion, two hundred billion, twelve million, one hundred twenty-one thousand, one".