1221122231202 has 16 divisors (see below), whose sum is σ = 2508251069952. Its totient is φ = 396039642480.

The previous prime is 1221122231167. The next prime is 1221122231209. The reversal of 1221122231202 is 2021322211221.

It is a super-2 number, since 2×1221122231202² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1221122231209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2750275074 + ... + 2750275517.

It is an arithmetic number, because the mean of its divisors is an integer number (156765691872).

Almost surely, 2^{1221122231202} is an apocalyptic number.

1221122231202 is an abundant number, since it is smaller than the sum of its proper divisors (1287128838750).

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

1221122231202 is a wasteful number, since it uses less digits than its factorization.

1221122231202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5500550633.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1221122231202 its reverse (2021322211221), we get a palindrome (3242444442423).

The spelling of 1221122231202 in words is "one trillion, two hundred twenty-one billion, one hundred twenty-two million, two hundred thirty-one thousand, two hundred two".