2123133653 has 4 divisors (see below), whose sum is σ = 2134249728. Its totient is φ = 2112017580.

The previous prime is 2123133647. The next prime is 2123133707. The reversal of 2123133653 is 3563313212.

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 2123133653 - 2⁶ = 2123133589 is a prime.

It is a super-2 number, since 2×2123133653² = 9015393017002248818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123132653) 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, 5557751 + ... + 5558132.

It is an arithmetic number, because the mean of its divisors is an integer number (533562432).

Almost surely, 2^2123133653 is an apocalyptic number.

It is an amenable number.

2123133653 is a deficient number, since it is larger than the sum of its proper divisors (11116075).

2123133653 is a wasteful number, since it uses less digits than its factorization.

2123133653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11116074.

The product of its digits is 9720, while the sum is 29.

The square root of 2123133653 is about 46077.4744642108. The cubic root of 2123133653 is about 1285.2643004823.

Adding to 2123133653 its reverse (3563313212), we get a palindrome (5686446865).

The spelling of 2123133653 in words is "two billion, one hundred twenty-three million, one hundred thirty-three thousand, six hundred fifty-three".