221514023 has 4 divisors (see below), whose sum is σ = 221549328. Its totient is φ = 221478720.

The previous prime is 221514019. The next prime is 221514031. The reversal of 221514023 is 320415122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320415122 = 2 ⋅160207561.

It is a cyclic number.

It is not a de Polignac number, because 221514023 - 2² = 221514019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221513986 and 221514004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221514053) 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, 5411 + ... + 21732.

It is an arithmetic number, because the mean of its divisors is an integer number (55387332).

Almost surely, 2^221514023 is an apocalyptic number.

221514023 is a deficient number, since it is larger than the sum of its proper divisors (35305).

221514023 is an equidigital number, since it uses as much as digits as its factorization.

221514023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35304.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 221514023 is about 14883.3471705796. The cubic root of 221514023 is about 605.0627378420.

Adding to 221514023 its reverse (320415122), we get a palindrome (541929145).

The spelling of 221514023 in words is "two hundred twenty-one million, five hundred fourteen thousand, twenty-three".