1201022123 has 12 divisors (see below), whose sum is σ = 1379911632. Its totient is φ = 1023990240.

The previous prime is 1201022111. The next prime is 1201022131. The reversal of 1201022123 is 3212201021.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1201022123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201022098 and 1201022107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201052123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269453 + ... + 273873.

It is an arithmetic number, because the mean of its divisors is an integer number (114992636).

Almost surely, 2^1201022123 is an apocalyptic number.

1201022123 is a deficient number, since it is larger than the sum of its proper divisors (178889509).

1201022123 is an frugal number, since it uses more digits than its factorization.

1201022123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4822 (or 4625 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1201022123 is about 34655.7660858911. The cubic root of 1201022123 is about 1062.9601968277.

Adding to 1201022123 its reverse (3212201021), we get a palindrome (4413223144).

The spelling of 1201022123 in words is "one billion, two hundred one million, twenty-two thousand, one hundred twenty-three".