90102210112 has 28 divisors (see below), whose sum is σ = 178840112220. Its totient is φ = 45040134656.

The previous prime is 90102210097. The next prime is 90102210137. The reversal of 90102210112 is 21101220109.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12024438336 + 78077771776 = 109656^2 + 279424^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90102210112.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96714 + ... + 435382.

It is an arithmetic number, because the mean of its divisors is an integer number (6387146865).

Almost surely, 2^90102210112 is an apocalyptic number.

It is an amenable number.

90102210112 is a deficient number, since it is larger than the sum of its proper divisors (88737902108).

90102210112 is a wasteful number, since it uses less digits than its factorization.

90102210112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342838 (or 342828 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

It can be divided in two parts, 9010 and 2210112, that added together give a palindrome (2219122).

The spelling of 90102210112 in words is "ninety billion, one hundred two million, two hundred ten thousand, one hundred twelve".