20233540211 has 4 divisors (see below), whose sum is σ = 21298463400. Its totient is φ = 19168617024.

The previous prime is 20233540189. The next prime is 20233540237. The reversal of 20233540211 is 11204533202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11204533202 = 2 ⋅5602266601.

It is a cyclic number.

It is not a de Polignac number, because 20233540211 - 2⁶ = 20233540147 is a prime.

It is a super-2 number, since 2×20233540211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20233540511) 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, 532461566 + ... + 532461603.

It is an arithmetic number, because the mean of its divisors is an integer number (5324615850).

Almost surely, 2^20233540211 is an apocalyptic number.

20233540211 is a deficient number, since it is larger than the sum of its proper divisors (1064923189).

20233540211 is a wasteful number, since it uses less digits than its factorization.

20233540211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064923188.

The product of its (nonzero) digits is 1440, while the sum is 23.

The spelling of 20233540211 in words is "twenty billion, two hundred thirty-three million, five hundred forty thousand, two hundred eleven".