221225102 has 24 divisors (see below), whose sum is σ = 392568120. Its totient is φ = 93201360.

The previous prime is 221225093. The next prime is 221225111. The reversal of 221225102 is 201522122.

221225102 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221225093) and next prime (221225111).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13349 + ... + 24912.

It is an arithmetic number, because the mean of its divisors is an integer number (16357005).

Almost surely, 2^221225102 is an apocalyptic number.

221225102 is a deficient number, since it is larger than the sum of its proper divisors (171343018).

221225102 is a wasteful number, since it uses less digits than its factorization.

221225102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38336 (or 38329 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 221225102 is about 14873.6378199820. The cubic root of 221225102 is about 604.7995620424.

Adding to 221225102 its reverse (201522122), we get a palindrome (422747224).

The spelling of 221225102 in words is "two hundred twenty-one million, two hundred twenty-five thousand, one hundred two".