22021220122 has 16 divisors (see below), whose sum is σ = 37277301600. Its totient is φ = 9664485040.

The previous prime is 22021220063. The next prime is 22021220159. The reversal of 22021220122 is 22102212022.

It is a junction number, because it is equal to n+sod(n) for n = 22021220096 and 22021220105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17257372 + ... + 17258647.

It is an arithmetic number, because the mean of its divisors is an integer number (2329831350).

Almost surely, 2^22021220122 is an apocalyptic number.

22021220122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22021220122 is a deficient number, since it is larger than the sum of its proper divisors (15256081478).

22021220122 is a wasteful number, since it uses less digits than its factorization.

22021220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34516061.

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

Adding to 22021220122 its reverse (22102212022), we get a palindrome (44123432144).

The spelling of 22021220122 in words is "twenty-two billion, twenty-one million, two hundred twenty thousand, one hundred twenty-two".