1201122212120 has 32 divisors (see below), whose sum is σ = 2703284647200. Its totient is φ = 480313832448.

The previous prime is 1201122212071. The next prime is 1201122212123. The reversal of 1201122212120 is 212122211021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201122212123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4076249 + ... + 4360968.

It is an arithmetic number, because the mean of its divisors is an integer number (84477645225).

Almost surely, 2^{1201122212120} is an apocalyptic number.

1201122212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201122212120 is an abundant number, since it is smaller than the sum of its proper divisors (1502162435080).

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

1201122212120 is a wasteful number, since it uses less digits than its factorization.

1201122212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8440787 (or 8440783 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1201122212120 its reverse (212122211021), we get a palindrome (1413244423141).

The spelling of 1201122212120 in words is "one trillion, two hundred one billion, one hundred twenty-two million, two hundred twelve thousand, one hundred twenty".