221211034 has 16 divisors (see below), whose sum is σ = 381034080. Its totient is φ = 95258160.

The previous prime is 221211017. The next prime is 221211037. The reversal of 221211034 is 430112122.

It is a junction number, because it is equal to n+sod(n) for n = 221210999 and 221211017.

It is not an unprimeable number, because it can be changed into a prime (221211037) 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, 264189 + ... + 265024.

It is an arithmetic number, because the mean of its divisors is an integer number (23814630).

Almost surely, 2^221211034 is an apocalyptic number.

221211034 is a deficient number, since it is larger than the sum of its proper divisors (159823046).

221211034 is a wasteful number, since it uses less digits than its factorization.

221211034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529245.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 221211034 is about 14873.1648952064. The cubic root of 221211034 is about 604.7867417664.

Adding to 221211034 its reverse (430112122), we get a palindrome (651323156).

The spelling of 221211034 in words is "two hundred twenty-one million, two hundred eleven thousand, thirty-four".