91221102302102 has 32 divisors (see below), whose sum is σ = 140992025328000. Its totient is φ = 44241178067968.

The previous prime is 91221102302087. The next prime is 91221102302147. The reversal of 91221102302102 is 20120320112219.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122301674 + ... + 123045282.

It is an arithmetic number, because the mean of its divisors is an integer number (4406000791500).

Almost surely, 2^{91221102302102} is an apocalyptic number.

91221102302102 is a deficient number, since it is larger than the sum of its proper divisors (49770923025898).

91221102302102 is a wasteful number, since it uses less digits than its factorization.

91221102302102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755320.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 91221102302102 in words is "ninety-one trillion, two hundred twenty-one billion, one hundred two million, three hundred two thousand, one hundred two".