1212202100120 has 64 divisors (see below), whose sum is σ = 2976805015200. Its totient is φ = 440593377280.

The previous prime is 1212202100119. The next prime is 1212202100149. The reversal of 1212202100120 is 210012022121.

It is a junction number, because it is equal to n+sod(n) for n = 1212202100095 and 1212202100104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289742 + ... + 1583778.

Almost surely, 2^{1212202100120} is an apocalyptic number.

1212202100120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212202100120 is an abundant number, since it is smaller than the sum of its proper divisors (1764602915080).

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

1212202100120 is a wasteful number, since it uses less digits than its factorization.

1212202100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296188 (or 1296184 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1212202100120 its reverse (210012022121), we get a palindrome (1422214122241).

The spelling of 1212202100120 in words is "one trillion, two hundred twelve billion, two hundred two million, one hundred thousand, one hundred twenty".