221254034 has 16 divisors (see below), whose sum is σ = 339909696. Its totient is φ = 107982000.

The previous prime is 221254009. The next prime is 221254039. The reversal of 221254034 is 430452122.

It is a happy number.

It is a super-2 number, since 2×221254034² = 97906695122546312, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221254039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6629 + ... + 22055.

It is an arithmetic number, because the mean of its divisors is an integer number (21244356).

Almost surely, 2^221254034 is an apocalyptic number.

221254034 is a deficient number, since it is larger than the sum of its proper divisors (118655662).

221254034 is a wasteful number, since it uses less digits than its factorization.

221254034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15601.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 221254034 is about 14874.6103814520. The cubic root of 221254034 is about 604.8259262872.

The spelling of 221254034 in words is "two hundred twenty-one million, two hundred fifty-four thousand, thirty-four".