1200122122220 has 96 divisors (see below), whose sum is σ = 2886729269760. Its totient is φ = 410551787520.

The previous prime is 1200122122189. The next prime is 1200122122223. The reversal of 1200122122220 is 222212210021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1200122122223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267822380 + ... + 267826860.

It is an arithmetic number, because the mean of its divisors is an integer number (30070096560).

Almost surely, 2^{1200122122220} is an apocalyptic number.

1200122122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200122122220 is an abundant number, since it is smaller than the sum of its proper divisors (1686607147540).

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

1200122122220 is a wasteful number, since it uses less digits than its factorization.

1200122122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8343 (or 8341 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1200122122220 its reverse (222212210021), we get a palindrome (1422334332241).

The spelling of 1200122122220 in words is "one trillion, two hundred billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty".