1200111202220 has 24 divisors (see below), whose sum is σ = 2880266885664. Its totient is φ = 411466697856.

The previous prime is 1200111202153. The next prime is 1200111202223. The reversal of 1200111202220 is 222021110021.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1200111202195 and 1200111202204.

It is not an unprimeable number, because it can be changed into a prime (1200111202223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4286111297 + ... + 4286111576.

It is an arithmetic number, because the mean of its divisors is an integer number (120011120236).

Almost surely, 2^{1200111202220} is an apocalyptic number.

1200111202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200111202220 is an abundant number, since it is smaller than the sum of its proper divisors (1680155683444).

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

1200111202220 is a wasteful number, since it uses less digits than its factorization.

1200111202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8572222889 (or 8572222887 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1200111202220 its reverse (222021110021), we get a palindrome (1422132312241).

It can be divided in two parts, 120011 and 1202220, that added together give a palindrome (1322231).

The spelling of 1200111202220 in words is "one trillion, two hundred billion, one hundred eleven million, two hundred two thousand, two hundred twenty".