223216920261 has 16 divisors (see below), whose sum is σ = 330700921920. Its totient is φ = 148807145520.

The previous prime is 223216920083. The next prime is 223216920281. The reversal of 223216920261 is 162029612322.

223216920261 is a `hidden beast` number, since 2 + 232 + 169 + 2 + 0 + 261 = 666.

It is not a de Polignac number, because 223216920261 - 2¹¹ = 223216918213 is a prime.

It is a super-3 number, since 3×223216920261³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223216920281) 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, 1113931 + ... + 1298951.

It is an arithmetic number, because the mean of its divisors is an integer number (20668807620).

Almost surely, 2^223216920261 is an apocalyptic number.

It is an amenable number.

223216920261 is a deficient number, since it is larger than the sum of its proper divisors (107484001659).

223216920261 is a wasteful number, since it uses less digits than its factorization.

223216920261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229713 (or 229707 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 223216920261 in words is "two hundred twenty-three billion, two hundred sixteen million, nine hundred twenty thousand, two hundred sixty-one".