22121222002 has 16 divisors (see below), whose sum is σ = 36207676512. Its totient is φ = 10052513920.

The previous prime is 22121221981. The next prime is 22121222027. The reversal of 22121222002 is 20022212122.

It is an unprimeable number.

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, 40543 + ... + 214210.

It is an arithmetic number, because the mean of its divisors is an integer number (2262979782).

Almost surely, 2^22121222002 is an apocalyptic number.

22121222002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22121222002 is a deficient number, since it is larger than the sum of its proper divisors (14086454510).

22121222002 is a wasteful number, since it uses less digits than its factorization.

22121222002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258713.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22121222002 its reverse (20022212122), we get a palindrome (42143434124).

It can be divided in two parts, 2212122 and 2002, that multiplied together give a palindrome (4428668244).

The spelling of 22121222002 in words is "twenty-two billion, one hundred twenty-one million, two hundred twenty-two thousand, two".