202100220100001 has 2 divisors, whose sum is σ = 202100220100002. Its totient is φ = 202100220100000.

The previous prime is 202100220099991. The next prime is 202100220100027. The reversal of 202100220100001 is 100001022001202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196533734864401 + 5566485235600 = 14019049^2 + 2359340^2 .

It is a cyclic number.

It is not a de Polignac number, because 202100220100001 - 2²² = 202100215905697 is a prime.

It is not a weakly prime, because it can be changed into another prime (202108220100001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101050110050000 + 101050110050001.

It is an arithmetic number, because the mean of its divisors is an integer number (101050110050001).

Almost surely, 2^{202100220100001} is an apocalyptic number.

It is an amenable number.

202100220100001 is a deficient number, since it is larger than the sum of its proper divisors (1).

202100220100001 is an equidigital number, since it uses as much as digits as its factorization.

202100220100001 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 202100220100001 its reverse (100001022001202), we get a palindrome (302101242101203).

The spelling of 202100220100001 in words is "two hundred two trillion, one hundred billion, two hundred twenty million, one hundred thousand, one".