1212201022120 has 64 divisors (see below), whose sum is σ = 2982677774400. Its totient is φ = 439722554880.

The previous prime is 1212201022117. The next prime is 1212201022133. The reversal of 1212201022120 is 212201022121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1212201022094 and 1212201022103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3188014 + ... + 3547933.

It is an arithmetic number, because the mean of its divisors is an integer number (46604340225).

Almost surely, 2^{1212201022120} is an apocalyptic number.

1212201022120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212201022120 is an abundant number, since it is smaller than the sum of its proper divisors (1770476752280).

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

1212201022120 is a wasteful number, since it uses less digits than its factorization.

1212201022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6736378 (or 6736374 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212201022120 its reverse (212201022121), we get a palindrome (1424402044241).

Subtracting from 1212201022120 its reverse (212201022121), we obtain a palindrome (999999999999).

The spelling of 1212201022120 in words is "one trillion, two hundred twelve billion, two hundred one million, twenty-two thousand, one hundred twenty".