1200022111210 has 32 divisors (see below), whose sum is σ = 2326578286032. Its totient is φ = 443012405760.

The previous prime is 1200022111207. The next prime is 1200022111217. The reversal of 1200022111210 is 121112200021.

It can be written as a sum of positive squares in 8 ways, for example, as 2916972081 + 1197105139129 = 54009^2 + 1094123^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (1200022111217) 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, 41692 + ... + 1549768.

Almost surely, 2^{1200022111210} is an apocalyptic number.

1200022111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200022111210 is a deficient number, since it is larger than the sum of its proper divisors (1126556174822).

1200022111210 is a wasteful number, since it uses less digits than its factorization.

1200022111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514218.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1200022111210 its reverse (121112200021), we get a palindrome (1321134311231).

The spelling of 1200022111210 in words is "one trillion, two hundred billion, twenty-two million, one hundred eleven thousand, two hundred ten".