100220111281201 has 2 divisors, whose sum is σ = 100220111281202. Its totient is φ = 100220111281200.

The previous prime is 100220111281189. The next prime is 100220111281259. The reversal of 100220111281201 is 102182111022001.

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., 80431839824400 + 19788271456801 = 8968380^2 + 4448401^2 .

It is a cyclic number.

It is not a de Polignac number, because 100220111281201 - 2²¹ = 100220109184049 is a prime.

It is not a weakly prime, because it can be changed into another prime (100220111281261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50110055640600 + 50110055640601.

It is an arithmetic number, because the mean of its divisors is an integer number (50110055640601).

Almost surely, 2^{100220111281201} is an apocalyptic number.

It is an amenable number.

100220111281201 is a deficient number, since it is larger than the sum of its proper divisors (1).

100220111281201 is an equidigital number, since it uses as much as digits as its factorization.

100220111281201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 22.

The spelling of 100220111281201 in words is "one hundred trillion, two hundred twenty billion, one hundred eleven million, two hundred eighty-one thousand, two hundred one".