1212118821270 has 96 divisors (see below), whose sum is σ = 3601914421248. Its totient is φ = 277041121344.

The previous prime is 1212118821253. The next prime is 1212118821283. The reversal of 1212118821270 is 721288112121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15867507 + ... + 15943713.

It is an arithmetic number, because the mean of its divisors is an integer number (37519941888).

Almost surely, 2^{1212118821270} is an apocalyptic number.

1212118821270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212118821270 is an abundant number, since it is smaller than the sum of its proper divisors (2389795599978).

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

1212118821270 is a wasteful number, since it uses less digits than its factorization.

1212118821270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101474 (or 101471 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 36.

The spelling of 1212118821270 in words is "one trillion, two hundred twelve billion, one hundred eighteen million, eight hundred twenty-one thousand, two hundred seventy".