1210222201 has 4 divisors (see below), whose sum is σ = 1212687504. Its totient is φ = 1207756900.

The previous prime is 1210222183. The next prime is 1210222213. The reversal of 1210222201 is 1022220121.

It is a happy number.

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 1210222201 - 2⁹ = 1210221689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210232201) 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, 1231915 + ... + 1232896.

It is an arithmetic number, because the mean of its divisors is an integer number (303171876).

Almost surely, 2^1210222201 is an apocalyptic number.

It is an amenable number.

1210222201 is a deficient number, since it is larger than the sum of its proper divisors (2465303).

1210222201 is an equidigital number, since it uses as much as digits as its factorization.

1210222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2465302.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1210222201 is about 34788.2480300460. The cubic root of 1210222201 is about 1065.6674608411.

Adding to 1210222201 its reverse (1022220121), we get a palindrome (2232442322).

The spelling of 1210222201 in words is "one billion, two hundred ten million, two hundred twenty-two thousand, two hundred one".