122001222100 has 18 divisors (see below), whose sum is σ = 264742652174. Its totient is φ = 48800488800.

The previous prime is 122001222071. The next prime is 122001222127. The reversal of 122001222100 is 1222100221.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 18118775236 + 103882446864 = 134606^2 + 322308^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 610006011 + ... + 610006210.

Almost surely, 2^122001222100 is an apocalyptic number.

122001222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122001222100 is an abundant number, since it is smaller than the sum of its proper divisors (142741430074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122001222100 is a wasteful number, since it uses less digits than its factorization.

122001222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220012235 (or 1220012228 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 122001222100 its reverse (1222100221), we get a palindrome (123223322321).

The spelling of 122001222100 in words is "one hundred twenty-two billion, one million, two hundred twenty-two thousand, one hundred".