10221111226 has 4 divisors (see below), whose sum is σ = 15331666842. Its totient is φ = 5110555612.

The previous prime is 10221111203. The next prime is 10221111227. The reversal of 10221111226 is 62211112201.

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., 9526736025 + 694375201 = 97605^2 + 26351^2 .

It is a super-2 number, since 2×10221111226² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10221111227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555277805 + ... + 2555277808.

Almost surely, 2^10221111226 is an apocalyptic number.

10221111226 is a deficient number, since it is larger than the sum of its proper divisors (5110555616).

10221111226 is an equidigital number, since it uses as much as digits as its factorization.

10221111226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5110555615.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 10221111226 its reverse (62211112201), we get a palindrome (72432223427).

The spelling of 10221111226 in words is "ten billion, two hundred twenty-one million, one hundred eleven thousand, two hundred twenty-six".