2121222120133 has 4 divisors (see below), whose sum is σ = 2137924656640. Its totient is φ = 2104519583628.

The previous prime is 2121222120131. The next prime is 2121222120151. The reversal of 2121222120133 is 3310212221212.

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 2121222120133 - 2¹ = 2121222120131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121222120131) 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, 8351268063 + ... + 8351268316.

It is an arithmetic number, because the mean of its divisors is an integer number (534481164160).

Almost surely, 2^{2121222120133} is an apocalyptic number.

It is an amenable number.

2121222120133 is a deficient number, since it is larger than the sum of its proper divisors (16702536507).

2121222120133 is a wasteful number, since it uses less digits than its factorization.

2121222120133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16702536506.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2121222120133 its reverse (3310212221212), we get a palindrome (5431434341345).

The spelling of 2121222120133 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred twenty thousand, one hundred thirty-three".