90011210212201 has 2 divisors, whose sum is σ = 90011210212202. Its totient is φ = 90011210212200.

The previous prime is 90011210212199. The next prime is 90011210212213. The reversal of 90011210212201 is 10221201211009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74928084522201 + 15083125690000 = 8656101^2 + 3883700^2 .

It is an emirp because it is prime and its reverse (10221201211009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90011210212201 - 2¹ = 90011210212199 is a prime.

Together with 90011210212199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (90011210212801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45005605106100 + 45005605106101.

It is an arithmetic number, because the mean of its divisors is an integer number (45005605106101).

Almost surely, 2^{90011210212201} is an apocalyptic number.

It is an amenable number.

90011210212201 is a deficient number, since it is larger than the sum of its proper divisors (1).

90011210212201 is an equidigital number, since it uses as much as digits as its factorization.

90011210212201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 90011210212201 in words is "ninety trillion, eleven billion, two hundred ten million, two hundred twelve thousand, two hundred one".