1201112212120 has 64 divisors (see below), whose sum is σ = 2734503222240. Its totient is φ = 474774144000.

The previous prime is 1201112212117. The next prime is 1201112212127. The reversal of 1201112212120 is 212122111021.

It is a super-2 number, since 2×1201112212120² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1201112212094 and 1201112212103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201112212127) 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 15 ways as a sum of consecutive naturals, for example, 1819519 + ... + 2390161.

Almost surely, 2^{1201112212120} is an apocalyptic number.

1201112212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201112212120 is an abundant number, since it is smaller than the sum of its proper divisors (1533391010120).

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

1201112212120 is a wasteful number, since it uses less digits than its factorization.

1201112212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571276 (or 571272 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1201112212120 its reverse (212122111021), we get a palindrome (1413234323141).

The spelling of 1201112212120 in words is "one trillion, two hundred one billion, one hundred twelve million, two hundred twelve thousand, one hundred twenty".