2221111412 has 48 divisors (see below), whose sum is σ = 4262706000. Its totient is φ = 1006494720.

The previous prime is 2221111351. The next prime is 2221111447. The reversal of 2221111412 is 2141111222.

It can be written as a sum of positive squares in 8 ways, for example, as 395771236 + 1825340176 = 19894^2 + 42724^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 687962 + ... + 691182.

It is an arithmetic number, because the mean of its divisors is an integer number (88806375).

Almost surely, 2^2221111412 is an apocalyptic number.

It is an amenable number.

2221111412 is a deficient number, since it is larger than the sum of its proper divisors (2041594588).

2221111412 is a wasteful number, since it uses less digits than its factorization.

2221111412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3476 (or 3474 counting only the distinct ones).

The product of its digits is 64, while the sum is 17.

The square root of 2221111412 is about 47128.6686847825. The cubic root of 2221111412 is about 1304.7384104007.

Adding to 2221111412 its reverse (2141111222), we get a palindrome (4362222634).

The spelling of 2221111412 in words is "two billion, two hundred twenty-one million, one hundred eleven thousand, four hundred twelve".