122219100 has 54 divisors (see below), whose sum is σ = 383091800. Its totient is φ = 32591520.

The previous prime is 122219099. The next prime is 122219107. The reversal of 122219100 is 1912221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122219107) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 67000 + ... + 68799.

Almost surely, 2^122219100 is an apocalyptic number.

122219100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122219100 is an abundant number, since it is smaller than the sum of its proper divisors (260872700).

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

122219100 is a wasteful number, since it uses less digits than its factorization.

122219100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135819 (or 135809 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 122219100 is about 11055.2747591365. The cubic root of 122219100 is about 496.2642918137.

It can be divided in two parts, 12221 and 9100, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 122219100 in words is "one hundred twenty-two million, two hundred nineteen thousand, one hundred".