1200122020111 has 16 divisors (see below), whose sum is σ = 1373490609664. Its totient is φ = 1027234553184.

The previous prime is 1200122020087. The next prime is 1200122020127. The reversal of 1200122020111 is 1110202210021.

It is not a de Polignac number, because 1200122020111 - 2²¹ = 1200119922959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200122020091 and 1200122020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200122050111) 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, 37009741 + ... + 37042153.

It is an arithmetic number, because the mean of its divisors is an integer number (85843163104).

Almost surely, 2^{1200122020111} is an apocalyptic number.

1200122020111 is a deficient number, since it is larger than the sum of its proper divisors (173368589553).

1200122020111 is an equidigital number, since it uses as much as digits as its factorization.

1200122020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39670.

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

Adding to 1200122020111 its reverse (1110202210021), we get a palindrome (2310324230132).

The spelling of 1200122020111 in words is "one trillion, two hundred billion, one hundred twenty-two million, twenty thousand, one hundred eleven".