1211102222120 has 96 divisors (see below), whose sum is σ = 3170184561000. Its totient is φ = 415194458112.

The previous prime is 1211102222089. The next prime is 1211102222131. The reversal of 1211102222120 is 212222011121.

It can be written as a sum of positive squares in 4 ways, for example, as 723040701124 + 488061520996 = 850318^2 + 698614^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25552364 + ... + 25599716.

Almost surely, 2^{1211102222120} is an apocalyptic number.

1211102222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211102222120 is an abundant number, since it is smaller than the sum of its proper divisors (1959082338880).

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

1211102222120 is a wasteful number, since it uses less digits than its factorization.

1211102222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60427 (or 60416 counting only the distinct ones).

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

Adding to 1211102222120 its reverse (212222011121), we get a palindrome (1423324233241).

The spelling of 1211102222120 in words is "one trillion, two hundred eleven billion, one hundred two million, two hundred twenty-two thousand, one hundred twenty".