12221020221022 has 4 divisors (see below), whose sum is σ = 18331530331536. Its totient is φ = 6110510110510.

The previous prime is 12221020221019. The next prime is 12221020221043. The reversal of 12221020221022 is 22012202012221.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×12221020221022² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3055255055254 + ... + 3055255055257.

It is an arithmetic number, because the mean of its divisors is an integer number (4582882582884).

Almost surely, 2^{12221020221022} is an apocalyptic number.

12221020221022 is a deficient number, since it is larger than the sum of its proper divisors (6110510110514).

12221020221022 is an equidigital number, since it uses as much as digits as its factorization.

12221020221022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6110510110513.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12221020221022 its reverse (22012202012221), we get a palindrome (34233222233243).

The spelling of 12221020221022 in words is "twelve trillion, two hundred twenty-one billion, twenty million, two hundred twenty-one thousand, twenty-two".