12221122002 has 64 divisors (see below), whose sum is σ = 25702354944. Its totient is φ = 3869046720.

The previous prime is 12221121947. The next prime is 12221122037. The reversal of 12221122002 is 20022112221.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3649693 + ... + 3653039.

It is an arithmetic number, because the mean of its divisors is an integer number (401599296).

Almost surely, 2^12221122002 is an apocalyptic number.

12221122002 is an abundant number, since it is smaller than the sum of its proper divisors (13481232942).

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

12221122002 is a wasteful number, since it uses less digits than its factorization.

12221122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3743.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12221122002 its reverse (20022112221), we get a palindrome (32243234223).

The spelling of 12221122002 in words is "twelve billion, two hundred twenty-one million, one hundred twenty-two thousand, two".