91120020122 has 8 divisors (see below), whose sum is σ = 137276886900. Its totient is φ = 45361057824.

The previous prime is 91120020113. The next prime is 91120020143. The reversal of 91120020122 is 22102002119.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 91118855881 + 1164241 = 301859^2 + 1079^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 91120020094 and 91120020103.

It is an unprimeable number.

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, 99475547 + ... + 99476462.

Almost surely, 2^91120020122 is an apocalyptic number.

91120020122 is a deficient number, since it is larger than the sum of its proper divisors (46156866778).

91120020122 is a wasteful number, since it uses less digits than its factorization.

91120020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198952240.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 91120020122 in words is "ninety-one billion, one hundred twenty million, twenty thousand, one hundred twenty-two".