1212110121198 has 32 divisors (see below), whose sum is σ = 2458813439232. Its totient is φ = 398273254400.

The previous prime is 1212110121197. The next prime is 1212110121251. The reversal of 1212110121198 is 8911210112121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212110121191) 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, 2098990 + ... + 2613422.

It is an arithmetic number, because the mean of its divisors is an integer number (76837919976).

Almost surely, 2^{1212110121198} is an apocalyptic number.

1212110121198 is an abundant number, since it is smaller than the sum of its proper divisors (1246703318034).

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

1212110121198 is a wasteful number, since it uses less digits than its factorization.

1212110121198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520040.

The product of its (nonzero) digits is 576, while the sum is 30.

The spelling of 1212110121198 in words is "one trillion, two hundred twelve billion, one hundred ten million, one hundred twenty-one thousand, one hundred ninety-eight".