999022123001 has 16 divisors (see below), whose sum is σ = 1142557977600. Its totient is φ = 855691110288.

The previous prime is 999022122979. The next prime is 999022123103. The reversal of 999022123001 is 100321220999.

It is not a de Polignac number, because 999022123001 - 2³⁸ = 724144216057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999022123501) 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, 77323220 + ... + 77336138.

It is an arithmetic number, because the mean of its divisors is an integer number (71409873600).

Almost surely, 2^999022123001 is an apocalyptic number.

It is an amenable number.

999022123001 is a deficient number, since it is larger than the sum of its proper divisors (143535854599).

999022123001 is a wasteful number, since it uses less digits than its factorization.

999022123001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19988.

The product of its (nonzero) digits is 17496, while the sum is 38.

The spelling of 999022123001 in words is "nine hundred ninety-nine billion, twenty-two million, one hundred twenty-three thousand, one".