20212226 has 4 divisors (see below), whose sum is σ = 30318342. Its totient is φ = 10106112.

The previous prime is 20212223. The next prime is 20212259. The reversal of 20212226 is 62221202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62221202 = 2 ⋅31110601.

It can be written as a sum of positive squares in only one way, i.e., 19404025 + 808201 = 4405^2 + 899^2 .

It is not an unprimeable number, because it can be changed into a prime (20212223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5053055 + ... + 5053058.

Almost surely, 2^20212226 is an apocalyptic number.

20212226 is a deficient number, since it is larger than the sum of its proper divisors (10106116).

20212226 is a wasteful number, since it uses less digits than its factorization.

20212226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10106115.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20212226 is about 4495.8009297566. The cubic root of 20212226 is about 272.3985021657.

Adding to 20212226 its reverse (62221202), we get a palindrome (82433428).

The spelling of 20212226 in words is "twenty million, two hundred twelve thousand, two hundred twenty-six".