221042350 has 24 divisors (see below), whose sum is σ = 425318760. Its totient is φ = 85367520.

The previous prime is 221042309. The next prime is 221042377. The reversal of 221042350 is 53240122.

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, 74772 + ... + 77671.

It is an arithmetic number, because the mean of its divisors is an integer number (17721615).

Almost surely, 2^221042350 is an apocalyptic number.

221042350 is a deficient number, since it is larger than the sum of its proper divisors (204276410).

221042350 is a wasteful number, since it uses less digits than its factorization.

221042350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152484 (or 152479 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 221042350 is about 14867.4930637280. The cubic root of 221042350 is about 604.6329763973.

Adding to 221042350 its reverse (53240122), we get a palindrome (274282472).

The spelling of 221042350 in words is "two hundred twenty-one million, forty-two thousand, three hundred fifty".