122001001090 has 16 divisors (see below), whose sum is σ = 219890385720. Its totient is φ = 48736270720.

The previous prime is 122001001033. The next prime is 122001001091. The reversal of 122001001090 is 90100100221.

It can be written as a sum of positive squares in 4 ways, for example, as 18955507041 + 103045494049 = 137679^2 + 321007^2 .

It is not an unprimeable number, because it can be changed into a prime (122001001091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8008225 + ... + 8023444.

Almost surely, 2^122001001090 is an apocalyptic number.

122001001090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122001001090 is a deficient number, since it is larger than the sum of its proper divisors (97889384630).

122001001090 is a wasteful number, since it uses less digits than its factorization.

122001001090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16032437.

The product of its (nonzero) digits is 36, while the sum is 16.

The spelling of 122001001090 in words is "one hundred twenty-two billion, one million, one thousand, ninety".