1201012231 has 4 divisors (see below), whose sum is σ = 1228942792. Its totient is φ = 1173081672.

The previous prime is 1201012223. The next prime is 1201012237. The reversal of 1201012231 is 1322101021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1201012231 - 2³ = 1201012223 is a prime.

It is a super-2 number, since 2×1201012231² = 2884860758023194722, 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 (1201012237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13965216 + ... + 13965301.

It is an arithmetic number, because the mean of its divisors is an integer number (307235698).

Almost surely, 2^1201012231 is an apocalyptic number.

1201012231 is a deficient number, since it is larger than the sum of its proper divisors (27930561).

1201012231 is an equidigital number, since it uses as much as digits as its factorization.

1201012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27930560.

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

The square root of 1201012231 is about 34655.6233676441. The cubic root of 1201012231 is about 1062.9572785270.

Adding to 1201012231 its reverse (1322101021), we get a palindrome (2523113252).

The spelling of 1201012231 in words is "one billion, two hundred one million, twelve thousand, two hundred thirty-one".