1012211323 has 4 divisors (see below), whose sum is σ = 1014969760. Its totient is φ = 1009452888.

The previous prime is 1012211267. The next prime is 1012211341. The reversal of 1012211323 is 3231122101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3231122101 = 67 ⋅48225703.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012211323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012211297 and 1012211306.

It is not an unprimeable number, because it can be changed into a prime (1012211353) 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, 1378668 + ... + 1379401.

It is an arithmetic number, because the mean of its divisors is an integer number (253742440).

Almost surely, 2^1012211323 is an apocalyptic number.

1012211323 is a deficient number, since it is larger than the sum of its proper divisors (2758437).

1012211323 is an equidigital number, since it uses as much as digits as its factorization.

1012211323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758436.

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

The square root of 1012211323 is about 31815.2687085934. The cubic root of 1012211323 is about 1004.0539840049.

Adding to 1012211323 its reverse (3231122101), we get a palindrome (4243333424).

The spelling of 1012211323 in words is "one billion, twelve million, two hundred eleven thousand, three hundred twenty-three".