1201423211 has 2 divisors, whose sum is σ = 1201423212. Its totient is φ = 1201423210.

The previous prime is 1201423199. The next prime is 1201423241. The reversal of 1201423211 is 1123241021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201423211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201423211.

It is not a weakly prime, because it can be changed into another prime (1201423241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600711605 + 600711606.

It is an arithmetic number, because the mean of its divisors is an integer number (600711606).

Almost surely, 2^1201423211 is an apocalyptic number.

1201423211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201423211 is an equidigital number, since it uses as much as digits as its factorization.

1201423211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1201423211 is about 34661.5523455024. The cubic root of 1201423211 is about 1063.0785108095.

Adding to 1201423211 its reverse (1123241021), we get a palindrome (2324664232).

The spelling of 1201423211 in words is "one billion, two hundred one million, four hundred twenty-three thousand, two hundred eleven".