1211222202 has 16 divisors (see below), whose sum is σ = 2429196480. Its totient is φ = 402615392.

The previous prime is 1211222191. The next prime is 1211222213. The reversal of 1211222202 is 2022221121.

It is an interprime number because it is at equal distance from previous prime (1211222191) and next prime (1211222213).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279003 + ... + 283310.

It is an arithmetic number, because the mean of its divisors is an integer number (151824780).

Almost surely, 2^1211222202 is an apocalyptic number.

1211222202 is an abundant number, since it is smaller than the sum of its proper divisors (1217974278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211222202 is a wasteful number, since it uses less digits than its factorization.

1211222202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562677.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1211222202 is about 34802.6177463707. The cubic root of 1211222202 is about 1065.9608987297.

Adding to 1211222202 its reverse (2022221121), we get a palindrome (3233443323).

The spelling of 1211222202 in words is "one billion, two hundred eleven million, two hundred twenty-two thousand, two hundred two".