1212112221033 has 32 divisors (see below), whose sum is σ = 1854532730880. Its totient is φ = 689823241920.

The previous prime is 1212112221013. The next prime is 1212112221043. The reversal of 1212112221033 is 3301222112121.

It is not a de Polignac number, because 1212112221033 - 2⁸ = 1212112220777 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1212112221013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15834016 + ... + 15910382.

It is an arithmetic number, because the mean of its divisors is an integer number (57954147840).

Almost surely, 2^{1212112221033} is an apocalyptic number.

It is an amenable number.

1212112221033 is a deficient number, since it is larger than the sum of its proper divisors (642420509847).

1212112221033 is a wasteful number, since it uses less digits than its factorization.

1212112221033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79437.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1212112221033 its reverse (3301222112121), we get a palindrome (4513334333154).

The spelling of 1212112221033 in words is "one trillion, two hundred twelve billion, one hundred twelve million, two hundred twenty-one thousand, thirty-three".