90191101102 has 32 divisors (see below), whose sum is σ = 144510266880. Its totient is φ = 42095013120.

The previous prime is 90191101093. The next prime is 90191101103. The reversal of 90191101102 is 20110119109.

It is a super-2 number, since 2×90191101102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90191101103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 782827 + ... + 890617.

It is an arithmetic number, because the mean of its divisors is an integer number (4515945840).

Almost surely, 2^90191101102 is an apocalyptic number.

90191101102 is a deficient number, since it is larger than the sum of its proper divisors (54319165778).

90191101102 is a wasteful number, since it uses less digits than its factorization.

90191101102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108136.

The product of its (nonzero) digits is 162, while the sum is 25.

The spelling of 90191101102 in words is "ninety billion, one hundred ninety-one million, one hundred one thousand, one hundred two".