20122221122 has 16 divisors (see below), whose sum is σ = 32210472960. Its totient is φ = 9394717248.

The previous prime is 20122221107. The next prime is 20122221143. The reversal of 20122221122 is 22112222102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 20122221122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2325722 + ... + 2334357.

It is an arithmetic number, because the mean of its divisors is an integer number (2013154560).

Almost surely, 2^20122221122 is an apocalyptic number.

20122221122 is a deficient number, since it is larger than the sum of its proper divisors (12088251838).

20122221122 is a wasteful number, since it uses less digits than its factorization.

20122221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4660225.

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

Adding to 20122221122 its reverse (22112222102), we get a palindrome (42234443224).

The spelling of 20122221122 in words is "twenty billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred twenty-two".