1210123201 has 4 divisors (see below), whose sum is σ = 1382997952. Its totient is φ = 1037248452.

The previous prime is 1210123193. The next prime is 1210123259. The reversal of 1210123201 is 1023210121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1210123201 - 2³ = 1210123193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1210123261) 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, 86437365 + ... + 86437378.

It is an arithmetic number, because the mean of its divisors is an integer number (345749488).

Almost surely, 2^1210123201 is an apocalyptic number.

It is an amenable number.

1210123201 is a deficient number, since it is larger than the sum of its proper divisors (172874751).

1210123201 is an equidigital number, since it uses as much as digits as its factorization.

1210123201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172874750.

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

The square root of 1210123201 is about 34786.8251066406. The cubic root of 1210123201 is about 1065.6384017269.

Adding to 1210123201 its reverse (1023210121), we get a palindrome (2233333322).

The spelling of 1210123201 in words is "one billion, two hundred ten million, one hundred twenty-three thousand, two hundred one".