1201021231 has 8 divisors (see below), whose sum is σ = 1211470128. Its totient is φ = 1190592000.

The previous prime is 1201021201. The next prime is 1201021249. The reversal of 1201021231 is 1321201021.

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

It is a cyclic number.

It is not a de Polignac number, because 1201021231 - 2⁹ = 1201020719 is a prime.

It is a super-2 number, since 2×1201021231² = 2884903994625510722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201021201) 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, 134671 + ... + 143311.

It is an arithmetic number, because the mean of its divisors is an integer number (151433766).

Almost surely, 2^1201021231 is an apocalyptic number.

1201021231 is a deficient number, since it is larger than the sum of its proper divisors (10448897).

1201021231 is a wasteful number, since it uses less digits than its factorization.

1201021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9833.

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

The square root of 1201021231 is about 34655.7532164574. The cubic root of 1201021231 is about 1062.9599336739.

Adding to 1201021231 its reverse (1321201021), we get a palindrome (2522222252).

The spelling of 1201021231 in words is "one billion, two hundred one million, twenty-one thousand, two hundred thirty-one".