100220100201961 has 2 divisors, whose sum is σ = 100220100201962. Its totient is φ = 100220100201960.

The previous prime is 100220100201959. The next prime is 100220100202031. The reversal of 100220100201961 is 169102001022001.

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., 96033022526736 + 4187077675225 = 9799644^2 + 2046235^2 .

It is a cyclic number.

It is not a de Polignac number, because 100220100201961 - 2¹ = 100220100201959 is a prime.

It is a super-2 number, since 2×100220100201961² (a number of 29 digits) contains 22 as substring.

Together with 100220100201959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (100220100201901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50110050100980 + 50110050100981.

It is an arithmetic number, because the mean of its divisors is an integer number (50110050100981).

Almost surely, 2^{100220100201961} is an apocalyptic number.

It is an amenable number.

100220100201961 is a deficient number, since it is larger than the sum of its proper divisors (1).

100220100201961 is an equidigital number, since it uses as much as digits as its factorization.

100220100201961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

Adding to 100220100201961 its reverse (169102001022001), we get a palindrome (269322101223962).

The spelling of 100220100201961 in words is "one hundred trillion, two hundred twenty billion, one hundred million, two hundred one thousand, nine hundred sixty-one".