20255222111 has 8 divisors (see below), whose sum is σ = 20728184400. Its totient is φ = 19782346752.

The previous prime is 20255222063. The next prime is 20255222129. The reversal of 20255222111 is 11122255202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20255222111 - 2⁶ = 20255222047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20255222171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 898271 + ... + 920543.

It is an arithmetic number, because the mean of its divisors is an integer number (2591023050).

Almost surely, 2^20255222111 is an apocalyptic number.

20255222111 is a deficient number, since it is larger than the sum of its proper divisors (472962289).

20255222111 is a wasteful number, since it uses less digits than its factorization.

20255222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43465.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 20255222111 its reverse (11122255202), we get a palindrome (31377477313).

The spelling of 20255222111 in words is "twenty billion, two hundred fifty-five million, two hundred twenty-two thousand, one hundred eleven".