1220120122200 has 192 divisors, whose sum is σ = 4414684584960. Its totient is φ = 272950840320.

The previous prime is 1220120122171. The next prime is 1220120122213. The reversal of 1220120122200 is 22210210221.

It is a super-2 number, since 2×1220120122200² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1220120122200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2893077 + ... + 3287876.

It is an arithmetic number, because the mean of its divisors is an integer number (22993148880).

Almost surely, 2^{1220120122200} is an apocalyptic number.

1220120122200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220120122200 is an abundant number, since it is smaller than the sum of its proper divisors (3194564462760).

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

1220120122200 is a wasteful number, since it uses less digits than its factorization.

1220120122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6181026 (or 6181017 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1220120122200 its reverse (22210210221), we get a palindrome (1242330332421).

The spelling of 1220120122200 in words is "one trillion, two hundred twenty billion, one hundred twenty million, one hundred twenty-two thousand, two hundred".