122000100 has 144 divisors (see below), whose sum is σ = 376017600. Its totient is φ = 30481920.

The previous prime is 122000077. The next prime is 122000107. The reversal of 122000100 is 1000221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122000107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 321711 + ... + 322089.

Almost surely, 2^122000100 is an apocalyptic number.

122000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122000100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188008800).

122000100 is an abundant number, since it is smaller than the sum of its proper divisors (254017500).

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

122000100 is a wasteful number, since it uses less digits than its factorization.

122000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 122000100 is about 11045.3655439736. The cubic root of 122000100 is about 495.9677018945.

Adding to 122000100 its reverse (1000221), we get a palindrome (123000321).

The spelling of 122000100 in words is "one hundred twenty-two million, one hundred", and thus it is an aban number.