1206234121 has 4 divisors (see below), whose sum is σ = 1206306000. Its totient is φ = 1206162244.

The previous prime is 1206234101. The next prime is 1206234163. The reversal of 1206234121 is 1214326021.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1206234121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1206234092 and 1206234101.

It is not an unprimeable number, because it can be changed into a prime (1206234101) 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, 4110 + ... + 49288.

It is an arithmetic number, because the mean of its divisors is an integer number (301576500).

Almost surely, 2^1206234121 is an apocalyptic number.

It is an amenable number.

1206234121 is a deficient number, since it is larger than the sum of its proper divisors (71879).

1206234121 is an equidigital number, since it uses as much as digits as its factorization.

1206234121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71878.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1206234121 is about 34730.8813737861. The cubic root of 1206234121 is about 1064.4955978021.

The spelling of 1206234121 in words is "one billion, two hundred six million, two hundred thirty-four thousand, one hundred twenty-one".