1011223213 has 32 divisors (see below), whose sum is σ = 1360558080. Its totient is φ = 725837760.

The previous prime is 1011223207. The next prime is 1011223219. The reversal of 1011223213 is 3123221101.

It is an interprime number because it is at equal distance from previous prime (1011223207) and next prime (1011223219).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011223213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011223219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 739056 + ... + 740422.

It is an arithmetic number, because the mean of its divisors is an integer number (42517440).

Almost surely, 2^1011223213 is an apocalyptic number.

1011223213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1011223213 is a deficient number, since it is larger than the sum of its proper divisors (349334867).

1011223213 is a wasteful number, since it uses less digits than its factorization.

1011223213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1011223213 is about 31799.7360523637. The cubic root of 1011223213 is about 1003.7271620045.

Adding to 1011223213 its reverse (3123221101), we get a palindrome (4134444314).

The spelling of 1011223213 in words is "one billion, eleven million, two hundred twenty-three thousand, two hundred thirteen".