12221220001022 has 4 divisors (see below), whose sum is σ = 18331830001536. Its totient is φ = 6110610000510.

The previous prime is 12221220000991. The next prime is 12221220001057. The reversal of 12221220001022 is 22010002212221.

It is a happy number.

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

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, 3055305000254 + ... + 3055305000257.

It is an arithmetic number, because the mean of its divisors is an integer number (4582957500384).

Almost surely, 2^{12221220001022} is an apocalyptic number.

12221220001022 is a deficient number, since it is larger than the sum of its proper divisors (6110610000514).

12221220001022 is an equidigital number, since it uses as much as digits as its factorization.

12221220001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110610000513.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12221220001022 its reverse (22010002212221), we get a palindrome (34231222213243).

The spelling of 12221220001022 in words is "twelve trillion, two hundred twenty-one billion, two hundred twenty million, one thousand, twenty-two".