100122012010121 has 4 divisors (see below), whose sum is σ = 100122106407492. Its totient is φ = 100121917612752.

The previous prime is 100122012010001. The next prime is 100122012010283. The reversal of 100122012010121 is 121010210221001.

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 49193236136521 + 50928775873600 = 7013789^2 + 7136440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100122012010121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100122012010096 and 100122012010105.

It is not an unprimeable number, because it can be changed into a prime (100122012016121) 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, 45589430 + ... + 47735103.

It is an arithmetic number, because the mean of its divisors is an integer number (25030526601873).

Almost surely, 2^{100122012010121} is an apocalyptic number.

It is an amenable number.

100122012010121 is a deficient number, since it is larger than the sum of its proper divisors (94397371).

100122012010121 is an equidigital number, since it uses as much as digits as its factorization.

100122012010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94397370.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 100122012010121 its reverse (121010210221001), we get a palindrome (221132222231122).

The spelling of 100122012010121 in words is "one hundred trillion, one hundred twenty-two billion, twelve million, ten thousand, one hundred twenty-one".