1212031100122 has 32 divisors (see below), whose sum is σ = 1944619603344. Its totient is φ = 564554880000.

The previous prime is 1212031100083. The next prime is 1212031100123. The reversal of 1212031100122 is 2210011302121.

It can be written as a sum of positive squares in 8 ways, for example, as 1189127001841 + 22904098281 = 1090471^2 + 151341^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212031100096 and 1212031100105.

It is not an unprimeable number, because it can be changed into a prime (1212031100123) 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, 12082372 + ... + 12182272.

Almost surely, 2^{1212031100122} is an apocalyptic number.

1212031100122 is a deficient number, since it is larger than the sum of its proper divisors (732588503222).

1212031100122 is a wasteful number, since it uses less digits than its factorization.

1212031100122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103554.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1212031100122 its reverse (2210011302121), we get a palindrome (3422042402243).

The spelling of 1212031100122 in words is "one trillion, two hundred twelve billion, thirty-one million, one hundred thousand, one hundred twenty-two".