1231021122 has 32 divisors (see below), whose sum is σ = 2493167040. Its totient is φ = 405166080.

The previous prime is 1231021109. The next prime is 1231021123. The reversal of 1231021122 is 2211201321.

It is not an unprimeable number, because it can be changed into a prime (1231021123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581538 + ... + 583650.

It is an arithmetic number, because the mean of its divisors is an integer number (77911470).

Almost surely, 2^1231021122 is an apocalyptic number.

1231021122 is an abundant number, since it is smaller than the sum of its proper divisors (1262145918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231021122 is a wasteful number, since it uses less digits than its factorization.

1231021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3298.

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

The square root of 1231021122 is about 35085.9105910050. The cubic root of 1231021122 is about 1071.7376842254.

Adding to 1231021122 its reverse (2211201321), we get a palindrome (3442222443).

The spelling of 1231021122 in words is "one billion, two hundred thirty-one million, twenty-one thousand, one hundred twenty-two".