221201214 has 16 divisors (see below), whose sum is σ = 476433552. Its totient is φ = 68061888.

The previous prime is 221201203. The next prime is 221201257. The reversal of 221201214 is 412102122.

It is a junction number, because it is equal to n+sod(n) for n = 221201193 and 221201202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1417879 + ... + 1418034.

It is an arithmetic number, because the mean of its divisors is an integer number (29777097).

Almost surely, 2^221201214 is an apocalyptic number.

221201214 is an abundant number, since it is smaller than the sum of its proper divisors (255232338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221201214 is a wasteful number, since it uses less digits than its factorization.

221201214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2835931.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 221201214 is about 14872.8347667820. The cubic root of 221201214 is about 604.7777924032. Note that the first 4 decimals are identical.

Adding to 221201214 its reverse (412102122), we get a palindrome (633303336).

The spelling of 221201214 in words is "two hundred twenty-one million, two hundred one thousand, two hundred fourteen".