1212202212120 has 96 divisors (see below), whose sum is σ = 4075507472400. Its totient is φ = 312107233536.

The previous prime is 1212202212077. The next prime is 1212202212139. The reversal of 1212202212120 is 212122022121.

It is a happy number.

1212202212120 is a `hidden beast` number, since 1 + 212 + 20 + 221 + 212 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1212202212093 and 1212202212102.

It is a congruent number.

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, 58045222 + ... + 58066101.

Almost surely, 2^{1212202212120} is an apocalyptic number.

1212202212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212202212120 is an abundant number, since it is smaller than the sum of its proper divisors (2863305260280).

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

1212202212120 is a wasteful number, since it uses less digits than its factorization.

1212202212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116111369 (or 116111362 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1212202212120 its reverse (212122022121), we get a palindrome (1424324234241).

The spelling of 1212202212120 in words is "one trillion, two hundred twelve billion, two hundred two million, two hundred twelve thousand, one hundred twenty".