1200122200220 has 48 divisors (see below), whose sum is σ = 2573429146848. Its totient is φ = 470016783360.

The previous prime is 1200122200181. The next prime is 1200122200223. The reversal of 1200122200220 is 220022210021.

It is a junction number, because it is equal to n+sod(n) for n = 1200122200195 and 1200122200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200122200223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2799986 + ... + 3200025.

It is an arithmetic number, because the mean of its divisors is an integer number (53613107226).

Almost surely, 2^{1200122200220} is an apocalyptic number.

1200122200220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200122200220 is an abundant number, since it is smaller than the sum of its proper divisors (1373306946628).

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

1200122200220 is a wasteful number, since it uses less digits than its factorization.

1200122200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6000230 (or 6000228 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1200122200220 its reverse (220022210021), we get a palindrome (1420144410241).

It can be divided in two parts, 120012 and 2200220, that added together give a palindrome (2320232).

The spelling of 1200122200220 in words is "one trillion, two hundred billion, one hundred twenty-two million, two hundred thousand, two hundred twenty".