1212221103198 has 32 divisors (see below), whose sum is σ = 2789387020800. Its totient is φ = 344024395680.

The previous prime is 1212221103193. The next prime is 1212221103251. The reversal of 1212221103198 is 8913011222121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212221103193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96847458 + ... + 96859973.

It is an arithmetic number, because the mean of its divisors is an integer number (87168344400).

Almost surely, 2^{1212221103198} is an apocalyptic number.

1212221103198 is an abundant number, since it is smaller than the sum of its proper divisors (1577165917602).

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

1212221103198 is a wasteful number, since it uses less digits than its factorization.

1212221103198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193707592.

The product of its (nonzero) digits is 3456, while the sum is 33.

The spelling of 1212221103198 in words is "one trillion, two hundred twelve billion, two hundred twenty-one million, one hundred three thousand, one hundred ninety-eight".