22100021002001 has 2 divisors, whose sum is σ = 22100021002002. Its totient is φ = 22100021002000.

The previous prime is 22100021001979. The next prime is 22100021002019. The reversal of 22100021002001 is 10020012000122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16311420787600 + 5788600214401 = 4038740^2 + 2405951^2 .

It is a cyclic number.

It is not a de Polignac number, because 22100021002001 - 2³⁴ = 22082841132817 is a prime.

It is not a weakly prime, because it can be changed into another prime (22100021002061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050010501000 + 11050010501001.

It is an arithmetic number, because the mean of its divisors is an integer number (11050010501001).

Almost surely, 2^{22100021002001} is an apocalyptic number.

It is an amenable number.

22100021002001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22100021002001 is an equidigital number, since it uses as much as digits as its factorization.

22100021002001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22100021002001 its reverse (10020012000122), we get a palindrome (32120033002123).

The spelling of 22100021002001 in words is "twenty-two trillion, one hundred billion, twenty-one million, two thousand, one".