1212010220120 has 128 divisors (see below), whose sum is σ = 3143387381760. Its totient is φ = 411979115520.

The previous prime is 1212010220087. The next prime is 1212010220147. The reversal of 1212010220120 is 210220102121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1212010220095 and 1212010220104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52866260 + ... + 52889180.

It is an arithmetic number, because the mean of its divisors is an integer number (24557713920).

Almost surely, 2^{1212010220120} is an apocalyptic number.

1212010220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212010220120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1571693690880).

1212010220120 is an abundant number, since it is smaller than the sum of its proper divisors (1931377161640).

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

1212010220120 is a wasteful number, since it uses less digits than its factorization.

1212010220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24553 (or 24549 counting only the distinct ones).

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

Adding to 1212010220120 its reverse (210220102121), we get a palindrome (1422230322241).

The spelling of 1212010220120 in words is "one trillion, two hundred twelve billion, ten million, two hundred twenty thousand, one hundred twenty".