12221001022 has 4 divisors (see below), whose sum is σ = 18331501536. Its totient is φ = 6110500510.

The previous prime is 12221001007. The next prime is 12221001097. The reversal of 12221001022 is 22010012221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22010012221 = 433 ⋅50831437.

It is a super-3 number, since 3×12221001022³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12221000993 and 12221001011.

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, 3055250254 + ... + 3055250257.

It is an arithmetic number, because the mean of its divisors is an integer number (4582875384).

Almost surely, 2^12221001022 is an apocalyptic number.

12221001022 is a deficient number, since it is larger than the sum of its proper divisors (6110500514).

12221001022 is an equidigital number, since it uses as much as digits as its factorization.

12221001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110500513.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12221001022 its reverse (22010012221), we get a palindrome (34231013243).

The spelling of 12221001022 in words is "twelve billion, two hundred twenty-one million, one thousand, twenty-two".