85722940121 has 64 divisors (see below), whose sum is σ = 110634467328. Its totient is φ = 64615477248.

The previous prime is 85722940099. The next prime is 85722940133. The reversal of 85722940121 is 12104922758.

It is not a de Polignac number, because 85722940121 - 2¹⁰ = 85722939097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85722940141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 70437305 + ... + 70438521.

It is an arithmetic number, because the mean of its divisors is an integer number (1728663552).

Almost surely, 2^85722940121 is an apocalyptic number.

It is an amenable number.

85722940121 is a deficient number, since it is larger than the sum of its proper divisors (24911527207).

85722940121 is a wasteful number, since it uses less digits than its factorization.

85722940121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 85722940121 in words is "eighty-five billion, seven hundred twenty-two million, nine hundred forty thousand, one hundred twenty-one".