221200023 has 32 divisors (see below), whose sum is σ = 341890560. Its totient is φ = 125919360.

The previous prime is 221200009. The next prime is 221200069. The reversal of 221200023 is 320002122.

It is not a de Polignac number, because 221200023 - 2⁵ = 221199991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221199981 and 221200008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221200093) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32286 + ... + 38532.

It is an arithmetic number, because the mean of its divisors is an integer number (10684080).

Almost surely, 2^221200023 is an apocalyptic number.

221200023 is a deficient number, since it is larger than the sum of its proper divisors (120690537).

221200023 is a wasteful number, since it uses less digits than its factorization.

221200023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6327.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 221200023 is about 14872.7947272865. The cubic root of 221200023 is about 604.7767069787.

Adding to 221200023 its reverse (320002122), we get a palindrome (541202145).

The spelling of 221200023 in words is "two hundred twenty-one million, two hundred thousand, twenty-three".