1211221202 has 8 divisors (see below), whose sum is σ = 1923704316. Its totient is φ = 569986432.

The previous prime is 1211221199. The next prime is 1211221213. The reversal of 1211221202 is 2021221121.

It can be written as a sum of positive squares in 2 ways, for example, as 1208883361 + 2337841 = 34769^2 + 1529^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17812043 + ... + 17812110.

Almost surely, 2^1211221202 is an apocalyptic number.

1211221202 is a deficient number, since it is larger than the sum of its proper divisors (712483114).

1211221202 is a wasteful number, since it uses less digits than its factorization.

1211221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35624172.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1211221202 is about 34802.6033796324. The cubic root of 1211221202 is about 1065.9606053728.

Adding to 1211221202 its reverse (2021221121), we get a palindrome (3232442323).

The spelling of 1211221202 in words is "one billion, two hundred eleven million, two hundred twenty-one thousand, two hundred two".