1210221202 has 4 divisors (see below), whose sum is σ = 1815331806. Its totient is φ = 605110600.

The previous prime is 1210221191. The next prime is 1210221203. The reversal of 1210221202 is 2021220121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2021220121 = 1499 ⋅1348379.

It can be written as a sum of positive squares in only one way, i.e., 892276641 + 317944561 = 29871^2 + 17831^2 .

It is not an unprimeable number, because it can be changed into a prime (1210221203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302555299 + ... + 302555302.

Almost surely, 2^1210221202 is an apocalyptic number.

1210221202 is a deficient number, since it is larger than the sum of its proper divisors (605110604).

1210221202 is an equidigital number, since it uses as much as digits as its factorization.

1210221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605110603.

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

The square root of 1210221202 is about 34788.2336717460. The cubic root of 1210221202 is about 1065.6671676161.

Adding to 1210221202 its reverse (2021220121), we get a palindrome (3231441323).

The spelling of 1210221202 in words is "one billion, two hundred ten million, two hundred twenty-one thousand, two hundred two".