90212111111 has 8 divisors (see below), whose sum is σ = 90429975504. Its totient is φ = 89994311680.

The previous prime is 90212110973. The next prime is 90212111177. The reversal of 90212111111 is 11111121209.

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

It is a cyclic number.

It is not a de Polignac number, because 90212111111 - 2¹⁴ = 90212094727 is a prime.

It is a super-3 number, since 3×90212111111³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

90212111111 is a modest number, since divided by 111111 gives 90212 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90212111411) 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, 3860615 + ... + 3883911.

It is an arithmetic number, because the mean of its divisors is an integer number (11303746938).

Almost surely, 2^90212111111 is an apocalyptic number.

90212111111 is a deficient number, since it is larger than the sum of its proper divisors (217864393).

90212111111 is a wasteful number, since it uses less digits than its factorization.

90212111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32481.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 90212111111 in words is "ninety billion, two hundred twelve million, one hundred eleven thousand, one hundred eleven".