90111121211011 has 8 divisors (see below), whose sum is σ = 98701836621120. Its totient is φ = 81885968158848.

The previous prime is 90111121210997. The next prime is 90111121211017. The reversal of 90111121211011 is 11011212111109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90111121211011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90111121211017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91390588971 + ... + 91390589956.

It is an arithmetic number, because the mean of its divisors is an integer number (12337729577640).

Almost surely, 2^{90111121211011} is an apocalyptic number.

90111121211011 is a deficient number, since it is larger than the sum of its proper divisors (8590715410109).

90111121211011 is a wasteful number, since it uses less digits than its factorization.

90111121211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182781178973.

The product of its (nonzero) digits is 36, while the sum is 22.

The spelling of 90111121211011 in words is "ninety trillion, one hundred eleven billion, one hundred twenty-one million, two hundred eleven thousand, eleven".