221154050 has 24 divisors (see below), whose sum is σ = 442989876. Its totient is φ = 81656640.

The previous prime is 221154019. The next prime is 221154061. The reversal of 221154050 is 50451122.

It can be written as a sum of positive squares in 6 ways, for example, as 69839449 + 151314601 = 8357^2 + 12301^2 .

It is a super-2 number, since 2×221154050² = 97818227662805000, which contains 22 as substring.

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, 169469 + ... + 170768.

Almost surely, 2^221154050 is an apocalyptic number.

221154050 is an abundant number, since it is smaller than the sum of its proper divisors (221835826).

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

221154050 is a wasteful number, since it uses less digits than its factorization.

221154050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340262 (or 340257 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 221154050 is about 14871.2491069177. The cubic root of 221154050 is about 604.7348062508.

The spelling of 221154050 in words is "two hundred twenty-one million, one hundred fifty-four thousand, fifty".