221051034 has 24 divisors (see below), whose sum is σ = 507117780. Its totient is φ = 69349248.

The previous prime is 221051029. The next prime is 221051041. The reversal of 221051034 is 430150122.

It can be written as a sum of positive squares in 2 ways, for example, as 198725409 + 22325625 = 14097^2 + 4725^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221050998 and 221051016.

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, 360889 + ... + 361500.

Almost surely, 2^221051034 is an apocalyptic number.

221051034 is an abundant number, since it is smaller than the sum of its proper divisors (286066746).

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

221051034 is a wasteful number, since it uses less digits than its factorization.

221051034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722414 (or 722411 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 221051034 is about 14867.7851074059. The cubic root of 221051034 is about 604.6408942827.

The spelling of 221051034 in words is "two hundred twenty-one million, fifty-one thousand, thirty-four".