1020211223 has 4 divisors (see below), whose sum is σ = 1020295728. Its totient is φ = 1020126720.

The previous prime is 1020211219. The next prime is 1020211229. The reversal of 1020211223 is 3221120201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1020211223 - 2² = 1020211219 is a prime.

It is a super-3 number, since 3×1020211223³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020211198 and 1020211207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020211229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20363 + ... + 49548.

It is an arithmetic number, because the mean of its divisors is an integer number (255073932).

Almost surely, 2^1020211223 is an apocalyptic number.

1020211223 is a deficient number, since it is larger than the sum of its proper divisors (84505).

1020211223 is an equidigital number, since it uses as much as digits as its factorization.

1020211223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84504.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1020211223 is about 31940.7454985008. The cubic root of 1020211223 is about 1006.6921890351.

Adding to 1020211223 its reverse (3221120201), we get a palindrome (4241331424).

The spelling of 1020211223 in words is "one billion, twenty million, two hundred eleven thousand, two hundred twenty-three".