21112102022122 has 16 divisors (see below), whose sum is σ = 31696199834112. Its totient is φ = 10546704946800.

The previous prime is 21112102022119. The next prime is 21112102022159. The reversal of 21112102022122 is 22122020121112.

It is a self number, because there is not a number n which added to its sum of digits gives 21112102022122.

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, 14068747 + ... + 15496897.

It is an arithmetic number, because the mean of its divisors is an integer number (1981012489632).

Almost surely, 2^{21112102022122} is an apocalyptic number.

21112102022122 is a deficient number, since it is larger than the sum of its proper divisors (10584097811990).

21112102022122 is a wasteful number, since it uses less digits than its factorization.

21112102022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434693.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21112102022122 its reverse (22122020121112), we get a palindrome (43234122143234).

The spelling of 21112102022122 in words is "twenty-one trillion, one hundred twelve billion, one hundred two million, twenty-two thousand, one hundred twenty-two".