2111221226 has 4 divisors (see below), whose sum is σ = 3166831842. Its totient is φ = 1055610612.

The previous prime is 2111221219. The next prime is 2111221253. The reversal of 2111221226 is 6221221112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1435273225 + 675948001 = 37885^2 + 25999^2 .

It is a super-2 number, since 2×2111221226² = 8914510130225886152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2111221198 and 2111221207.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527805305 + ... + 527805308.

Almost surely, 2^2111221226 is an apocalyptic number.

2111221226 is a deficient number, since it is larger than the sum of its proper divisors (1055610616).

2111221226 is a wasteful number, since it uses less digits than its factorization.

2111221226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055610615.

The product of its digits is 192, while the sum is 20.

The square root of 2111221226 is about 45948.0274440590. The cubic root of 2111221226 is about 1282.8560141049.

Adding to 2111221226 its reverse (6221221112), we get a palindrome (8332442338).

The spelling of 2111221226 in words is "two billion, one hundred eleven million, two hundred twenty-one thousand, two hundred twenty-six".