1200122020220 has 24 divisors (see below), whose sum is σ = 2530713747408. Its totient is φ = 478056902400.

The previous prime is 1200122020213. The next prime is 1200122020241. The reversal of 1200122020220 is 220202210021.

It is a junction number, because it is equal to n+sod(n) for n = 1200122020195 and 1200122020204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124489166 + ... + 124498805.

It is an arithmetic number, because the mean of its divisors is an integer number (105446406142).

Almost surely, 2^{1200122020220} is an apocalyptic number.

1200122020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200122020220 is an abundant number, since it is smaller than the sum of its proper divisors (1330591727188).

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

1200122020220 is a wasteful number, since it uses less digits than its factorization.

1200122020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248988221 (or 248988219 counting only the distinct ones).

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

Adding to 1200122020220 its reverse (220202210021), we get a palindrome (1420324230241).

The spelling of 1200122020220 in words is "one trillion, two hundred billion, one hundred twenty-two million, twenty thousand, two hundred twenty".