1012221231 has 8 divisors (see below), whose sum is σ = 1542432384. Its totient is φ = 578412120.

The previous prime is 1012221229. The next prime is 1012221277. The reversal of 1012221231 is 1321222101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1012221231 - 2¹ = 1012221229 is a prime.

It is a super-2 number, since 2×1012221231² = 2049183640974310722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1012221231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012221211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24100485 + ... + 24100526.

It is an arithmetic number, because the mean of its divisors is an integer number (192804048).

Almost surely, 2^1012221231 is an apocalyptic number.

1012221231 is a deficient number, since it is larger than the sum of its proper divisors (530211153).

1012221231 is an equidigital number, since it uses as much as digits as its factorization.

1012221231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48201021.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1012221231 is about 31815.4244196113. The cubic root of 1012221231 is about 1004.0572600449.

Adding to 1012221231 its reverse (1321222101), we get a palindrome (2333443332).

The spelling of 1012221231 in words is "one billion, twelve million, two hundred twenty-one thousand, two hundred thirty-one".