221234051 has 4 divisors (see below), whose sum is σ = 221319792. Its totient is φ = 221148312.

The previous prime is 221234047. The next prime is 221234053. The reversal of 221234051 is 150432122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221234051 - 2² = 221234047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221234053) 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, 38876 + ... + 44201.

It is an arithmetic number, because the mean of its divisors is an integer number (55329948).

Almost surely, 2^221234051 is an apocalyptic number.

221234051 is a deficient number, since it is larger than the sum of its proper divisors (85741).

221234051 is an equidigital number, since it uses as much as digits as its factorization.

221234051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85740.

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

The square root of 221234051 is about 14873.9386512114. The cubic root of 221234051 is about 604.8077170517.

Adding to 221234051 its reverse (150432122), we get a palindrome (371666173).

It can be divided in two parts, 2212 and 34051, that added together give a palindrome (36263).

The spelling of 221234051 in words is "two hundred twenty-one million, two hundred thirty-four thousand, fifty-one".