221035012 has 24 divisors (see below), whose sum is σ = 422537472. Its totient is φ = 100336800.

The previous prime is 221034997. The next prime is 221035027. The reversal of 221035012 is 210530122.

It is an interprime number because it is at equal distance from previous prime (221034997) and next prime (221035027).

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, 35062 + ... + 40882.

It is an arithmetic number, because the mean of its divisors is an integer number (17605728).

Almost surely, 2^221035012 is an apocalyptic number.

221035012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221035012 is a deficient number, since it is larger than the sum of its proper divisors (201502460).

221035012 is a wasteful number, since it uses less digits than its factorization.

221035012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6699 (or 6697 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 221035012 is about 14867.2462816757. The cubic root of 221035012 is about 604.6262856042.

Adding to 221035012 its reverse (210530122), we get a palindrome (431565134).

The spelling of 221035012 in words is "two hundred twenty-one million, thirty-five thousand, twelve".