90202220212001 has 2 divisors, whose sum is σ = 90202220212002. Its totient is φ = 90202220212000.

The previous prime is 90202220211953. The next prime is 90202220212021. The reversal of 90202220212001 is 10021202220209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89174026240000 + 1028193972001 = 9443200^2 + 1013999^2 .

It is an emirp because it is prime and its reverse (10021202220209) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90202220212001 - 2¹⁸ = 90202219949857 is a prime.

It is not a weakly prime, because it can be changed into another prime (90202220212021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45101110106000 + 45101110106001.

It is an arithmetic number, because the mean of its divisors is an integer number (45101110106001).

Almost surely, 2^{90202220212001} is an apocalyptic number.

It is an amenable number.

90202220212001 is a deficient number, since it is larger than the sum of its proper divisors (1).

90202220212001 is an equidigital number, since it uses as much as digits as its factorization.

90202220212001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 90202220212001 in words is "ninety trillion, two hundred two billion, two hundred twenty million, two hundred twelve thousand, one".