221034012 has 24 divisors (see below), whose sum is σ = 516371856. Its totient is φ = 73588608.

The previous prime is 221033987. The next prime is 221034029. The reversal of 221034012 is 210430122.

221034012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221034012² = 97712068921632288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221033982 and 221034000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463 + ... + 21030.

It is an arithmetic number, because the mean of its divisors is an integer number (21515494).

Almost surely, 2^221034012 is an apocalyptic number.

It is an amenable number.

221034012 is an abundant number, since it is smaller than the sum of its proper divisors (295337844).

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

221034012 is a wasteful number, since it uses less digits than its factorization.

221034012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22357 (or 22355 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 221034012 is about 14867.2126506619. The cubic root of 221034012 is about 604.6253737921.

Adding to 221034012 its reverse (210430122), we get a palindrome (431464134).

The spelling of 221034012 in words is "two hundred twenty-one million, thirty-four thousand, twelve".