221325122 has 4 divisors (see below), whose sum is σ = 331987686. Its totient is φ = 110662560.

The previous prime is 221325119. The next prime is 221325131. The reversal of 221325122 is 221523122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221523122 = 2 ⋅110761561.

It can be written as a sum of positive squares in only one way, i.e., 219958561 + 1366561 = 14831^2 + 1169^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221325094 and 221325103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55331279 + ... + 55331282.

Almost surely, 2^221325122 is an apocalyptic number.

221325122 is a deficient number, since it is larger than the sum of its proper divisors (110662564).

221325122 is a wasteful number, since it uses less digits than its factorization.

221325122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110662563.

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

The square root of 221325122 is about 14876.9997647375. Note that the first 3 decimals coincide. The cubic root of 221325122 is about 604.8906953683.

Adding to 221325122 its reverse (221523122), we get a palindrome (442848244).

The spelling of 221325122 in words is "two hundred twenty-one million, three hundred twenty-five thousand, one hundred twenty-two".