100222121002001 has 4 divisors (see below), whose sum is σ = 100249230045732. Its totient is φ = 100195011958272.

The previous prime is 100222121001971. The next prime is 100222121002009. The reversal of 100222121002001 is 100200121222001.

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 57707495937025 + 42514625064976 = 7596545^2 + 6520324^2 .

It is a cyclic number.

It is not a de Polignac number, because 100222121002001 - 2²² = 100222116807697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100222121002009) 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, 13554516320 + ... + 13554523713.

It is an arithmetic number, because the mean of its divisors is an integer number (25062307511433).

Almost surely, 2^{100222121002001} is an apocalyptic number.

It is an amenable number.

100222121002001 is a deficient number, since it is larger than the sum of its proper divisors (27109043731).

100222121002001 is an equidigital number, since it uses as much as digits as its factorization.

100222121002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27109043730.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100222121002001 its reverse (100200121222001), we get a palindrome (200422242224002).

The spelling of 100222121002001 in words is "one hundred trillion, two hundred twenty-two billion, one hundred twenty-one million, two thousand, one".