1212120012133 has 4 divisors (see below), whose sum is σ = 1213199372128. Its totient is φ = 1211040652140.

The previous prime is 1212120012101. The next prime is 1212120012151. The reversal of 1212120012133 is 3312100212121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1212120012133 - 2⁵ = 1212120012101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212120012133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212120012163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539678313 + ... + 539680558.

It is an arithmetic number, because the mean of its divisors is an integer number (303299843032).

Almost surely, 2^{1212120012133} is an apocalyptic number.

It is an amenable number.

1212120012133 is a deficient number, since it is larger than the sum of its proper divisors (1079359995).

1212120012133 is a wasteful number, since it uses less digits than its factorization.

1212120012133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079359994.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1212120012133 its reverse (3312100212121), we get a palindrome (4524220224254).

The spelling of 1212120012133 in words is "one trillion, two hundred twelve billion, one hundred twenty million, twelve thousand, one hundred thirty-three".