22121122112102 has 16 divisors (see below), whose sum is σ = 35735986469232. Its totient is φ = 10209215485920.

The previous prime is 22121122112101. The next prime is 22121122112123. The reversal of 22121122112102 is 20121122112122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121122112101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21708224 + ... + 22704387.

It is an arithmetic number, because the mean of its divisors is an integer number (2233499154327).

Almost surely, 2^{22121122112102} is an apocalyptic number.

22121122112102 is a deficient number, since it is larger than the sum of its proper divisors (13614864357130).

22121122112102 is a wasteful number, since it uses less digits than its factorization.

22121122112102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44431783.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22121122112102 its sum of digits (20), we get a palindrome (22121122112122).

Adding to 22121122112102 its reverse (20121122112122), we get a palindrome (42242244224224).

The spelling of 22121122112102 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred twenty-two million, one hundred twelve thousand, one hundred two".