1222121202211 has 32 divisors (see below), whose sum is σ = 1593344995200. Its totient is φ = 909664045056.

The previous prime is 1222121202173. The next prime is 1222121202217. The reversal of 1222121202211 is 1122021212221.

It is not a de Polignac number, because 1222121202211 - 2⁹ = 1222121201699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222121202217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3284065 + ... + 3637213.

It is an arithmetic number, because the mean of its divisors is an integer number (49792031100).

Almost surely, 2^{1222121202211} is an apocalyptic number.

1222121202211 is a deficient number, since it is larger than the sum of its proper divisors (371223792989).

1222121202211 is a wasteful number, since it uses less digits than its factorization.

1222121202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355423.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1222121202211 its reverse (1122021212221), we get a palindrome (2344142414432).

The spelling of 1222121202211 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred two thousand, two hundred eleven".