1021231123 has 32 divisors (see below), whose sum is σ = 1221454080. Its totient is φ = 843279360.

The previous prime is 1021231121. The next prime is 1021231139. The reversal of 1021231123 is 3211321201.

1021231123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021231123 - 2¹ = 1021231121 is a prime.

It is a super-2 number, since 2×1021231123² = 2085826013167682258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021231097 and 1021231106.

It is not an unprimeable number, because it can be changed into a prime (1021231121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 714936 + ... + 716362.

It is an arithmetic number, because the mean of its divisors is an integer number (38170440).

Almost surely, 2^1021231123 is an apocalyptic number.

1021231123 is a deficient number, since it is larger than the sum of its proper divisors (200222957).

1021231123 is a wasteful number, since it uses less digits than its factorization.

1021231123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587.

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

The square root of 1021231123 is about 31956.7070112050. The cubic root of 1021231123 is about 1007.0275390074.

Adding to 1021231123 its reverse (3211321201), we get a palindrome (4232552324).

The spelling of 1021231123 in words is "one billion, twenty-one million, two hundred thirty-one thousand, one hundred twenty-three".