1211222221202 has 32 divisors (see below), whose sum is σ = 2190880742400. Its totient is φ = 490600704528.

The previous prime is 1211222221189. The next prime is 1211222221309. The reversal of 1211222221202 is 2021222221121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5322278 + ... + 5545185.

It is an arithmetic number, because the mean of its divisors is an integer number (68465023200).

Almost surely, 2^{1211222221202} is an apocalyptic number.

1211222221202 is a deficient number, since it is larger than the sum of its proper divisors (979658521198).

1211222221202 is a wasteful number, since it uses less digits than its factorization.

1211222221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10867910.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1211222221202 its reverse (2021222221121), we get a palindrome (3232444442323).

The spelling of 1211222221202 in words is "one trillion, two hundred eleven billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred two".