90021100210111 has 4 divisors (see below), whose sum is σ = 102881257382992. Its totient is φ = 77160943037232.

The previous prime is 90021100210109. The next prime is 90021100210117. The reversal of 90021100210111 is 11101200112009.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90021100210111 - 2¹ = 90021100210109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90021100210117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6430078586430 + ... + 6430078586443.

It is an arithmetic number, because the mean of its divisors is an integer number (25720314345748).

Almost surely, 2^{90021100210111} is an apocalyptic number.

90021100210111 is a deficient number, since it is larger than the sum of its proper divisors (12860157172881).

90021100210111 is a wasteful number, since it uses less digits than its factorization.

90021100210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12860157172880.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 90021100210111 in words is "ninety trillion, twenty-one billion, one hundred million, two hundred ten thousand, one hundred eleven".