1021013223 has 12 divisors (see below), whose sum is σ = 1367436840. Its totient is φ = 677646016.

The previous prime is 1021013221. The next prime is 1021013249. The reversal of 1021013223 is 3223101201.

It is not a de Polignac number, because 1021013223 - 2¹ = 1021013221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021013221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159733 + ... + 166001.

It is an arithmetic number, because the mean of its divisors is an integer number (113953070).

Almost surely, 2^1021013223 is an apocalyptic number.

1021013223 is a deficient number, since it is larger than the sum of its proper divisors (346423617).

1021013223 is an frugal number, since it uses more digits than its factorization.

1021013223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6738 (or 6505 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1021013223 is about 31953.2975293631. The cubic root of 1021013223 is about 1006.9559107853.

Adding to 1021013223 its reverse (3223101201), we get a palindrome (4244114424).

The spelling of 1021013223 in words is "one billion, twenty-one million, thirteen thousand, two hundred twenty-three".