211156226 has 4 divisors (see below), whose sum is σ = 316734342. Its totient is φ = 105578112.

The previous prime is 211156189. The next prime is 211156237. The reversal of 211156226 is 622651112.

211156226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 146434201 + 64722025 = 12101^2 + 8045^2 .

It is a super-3 number, since 3×211156226³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211156195 and 211156204.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52789055 + ... + 52789058.

Almost surely, 2^211156226 is an apocalyptic number.

211156226 is a deficient number, since it is larger than the sum of its proper divisors (105578116).

211156226 is a wasteful number, since it uses less digits than its factorization.

211156226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105578115.

The product of its digits is 1440, while the sum is 26.

The square root of 211156226 is about 14531.2155720022. The cubic root of 211156226 is about 595.4810750469.

The spelling of 211156226 in words is "two hundred eleven million, one hundred fifty-six thousand, two hundred twenty-six".