91022220202 has 8 divisors (see below), whose sum is σ = 136543888800. Its totient is φ = 45507590604.

The previous prime is 91022220187. The next prime is 91022220203. The reversal of 91022220202 is 20202222019.

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

It is not an unprimeable number, because it can be changed into a prime (91022220203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1727302 + ... + 1779217.

It is an arithmetic number, because the mean of its divisors is an integer number (17067986100).

Almost surely, 2^91022220202 is an apocalyptic number.

91022220202 is a deficient number, since it is larger than the sum of its proper divisors (45521668598).

91022220202 is a wasteful number, since it uses less digits than its factorization.

91022220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3519500.

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 91022220202 in words is "ninety-one billion, twenty-two million, two hundred twenty thousand, two hundred two".