221614402 has 8 divisors (see below), whose sum is σ = 335713212. Its totient is φ = 109710000.

The previous prime is 221614391. The next prime is 221614417. The reversal of 221614402 is 204416122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 220195921 + 1418481 = 14839^2 + 1191^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×221614402² = 98225886347635208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548349 + ... + 548752.

Almost surely, 2^221614402 is an apocalyptic number.

221614402 is a deficient number, since it is larger than the sum of its proper divisors (114098810).

221614402 is a wasteful number, since it uses less digits than its factorization.

221614402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097204.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 221614402 is about 14886.7189803529. The cubic root of 221614402 is about 605.1541186945.

The spelling of 221614402 in words is "two hundred twenty-one million, six hundred fourteen thousand, four hundred two".