1012320211 has 4 divisors (see below), whose sum is σ = 1156937392. Its totient is φ = 867703032.

The previous prime is 1012320191. The next prime is 1012320251. The reversal of 1012320211 is 1120232101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1120232101 = 449 ⋅2494949.

It is not a de Polignac number, because 1012320211 - 2⁷ = 1012320083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012320191 and 1012320200.

It is not an unprimeable number, because it can be changed into a prime (1012320251) 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, 72308580 + ... + 72308593.

It is an arithmetic number, because the mean of its divisors is an integer number (289234348).

Almost surely, 2^1012320211 is an apocalyptic number.

1012320211 is a deficient number, since it is larger than the sum of its proper divisors (144617181).

1012320211 is an equidigital number, since it uses as much as digits as its factorization.

1012320211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144617180.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1012320211 is about 31816.9799163906. The cubic root of 1012320211 is about 1004.0899862071.

Adding to 1012320211 its reverse (1120232101), we get a palindrome (2132552312).

The spelling of 1012320211 in words is "one billion, twelve million, three hundred twenty thousand, two hundred eleven".