1200120211122 has 128 divisors (see below), whose sum is σ = 3014297763840. Its totient is φ = 310592335680.

The previous prime is 1200120211109. The next prime is 1200120211127. The reversal of 1200120211122 is 2211120210021.

It is a super-2 number, since 2×1200120211122² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1200120211127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49231597 + ... + 49255967.

It is an arithmetic number, because the mean of its divisors is an integer number (23549201280).

Almost surely, 2^{1200120211122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200120211122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1507148881920).

1200120211122 is an abundant number, since it is smaller than the sum of its proper divisors (1814177552718).

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

1200120211122 is a wasteful number, since it uses less digits than its factorization.

1200120211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27108.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1200120211122 its reverse (2211120210021), we get a palindrome (3411240421143).

The spelling of 1200120211122 in words is "one trillion, two hundred billion, one hundred twenty million, two hundred eleven thousand, one hundred twenty-two".