122571089890 has 16 divisors (see below), whose sum is σ = 220666164480. Its totient is φ = 49019946480.

The previous prime is 122571089881. The next prime is 122571089923. The reversal of 122571089890 is 98980175221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000380 + ... + 1116199.

It is an arithmetic number, because the mean of its divisors is an integer number (13791635280).

Almost surely, 2^122571089890 is an apocalyptic number.

122571089890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122571089890 is a deficient number, since it is larger than the sum of its proper divisors (98095074590).

122571089890 is a wasteful number, since it uses less digits than its factorization.

122571089890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2122377.

The product of its (nonzero) digits is 725760, while the sum is 52.

The spelling of 122571089890 in words is "one hundred twenty-two billion, five hundred seventy-one million, eighty-nine thousand, eight hundred ninety".