2121123312233 has 16 divisors (see below), whose sum is σ = 2211751471104. Its totient is φ = 2032761997200.

The previous prime is 2121123312229. The next prime is 2121123312247. The reversal of 2121123312233 is 3322133211212.

It is a cyclic number.

It is not a de Polignac number, because 2121123312233 - 2² = 2121123312229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121123318233) 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, 1490843 + ... + 2542608.

It is an arithmetic number, because the mean of its divisors is an integer number (138234466944).

Almost surely, 2^{2121123312233} is an apocalyptic number.

It is an amenable number.

2121123312233 is a deficient number, since it is larger than the sum of its proper divisors (90628158871).

2121123312233 is a wasteful number, since it uses less digits than its factorization.

2121123312233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033732.

The product of its digits is 2592, while the sum is 26.

Adding to 2121123312233 its reverse (3322133211212), we get a palindrome (5443256523445).

The spelling of 2121123312233 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-three million, three hundred twelve thousand, two hundred thirty-three".