1211222102120 has 16 divisors (see below), whose sum is σ = 2725249729860. Its totient is φ = 484488840832.

The previous prime is 1211222102119. The next prime is 1211222102159. The reversal of 1211222102120 is 212012221121.

It can be written as a sum of positive squares in 2 ways, for example, as 1181138587204 + 30083514916 = 1086802^2 + 173446^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15140276237 + ... + 15140276316.

Almost surely, 2^{1211222102120} is an apocalyptic number.

1211222102120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211222102120 is an abundant number, since it is smaller than the sum of its proper divisors (1514027627740).

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

1211222102120 is a wasteful number, since it uses less digits than its factorization.

1211222102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30280552564 (or 30280552560 counting only the distinct ones).

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

Adding to 1211222102120 its reverse (212012221121), we get a palindrome (1423234323241).

The spelling of 1211222102120 in words is "one trillion, two hundred eleven billion, two hundred twenty-two million, one hundred two thousand, one hundred twenty".