91012422421019 has 12 divisors (see below), whose sum is σ = 100039456959960. Its totient is φ = 82737731181600.

The previous prime is 91012422420923. The next prime is 91012422421033.

91012422421019 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 91012422421019 - 2²⁰ = 91012421372443 is a prime.

It is a super-2 number, since 2×91012422421019² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91012422421079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8411879 + ... + 15899199.

It is an arithmetic number, because the mean of its divisors is an integer number (8336621413330).

Almost surely, 2^{91012422421019} is an apocalyptic number.

91012422421019 is a deficient number, since it is larger than the sum of its proper divisors (9027034538941).

91012422421019 is a wasteful number, since it uses less digits than its factorization.

91012422421019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7587802 (or 7587791 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The spelling of 91012422421019 in words is "ninety-one trillion, twelve billion, four hundred twenty-two million, four hundred twenty-one thousand, nineteen".