20001102122 has 16 divisors (see below), whose sum is σ = 30368786112. Its totient is φ = 9878218560.

The previous prime is 20001102091. The next prime is 20001102161. The reversal of 20001102122 is 22120110002.

It is a happy number.

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, 1455122 + ... + 1468802.

It is an arithmetic number, because the mean of its divisors is an integer number (1898049132).

Almost surely, 2^20001102122 is an apocalyptic number.

20001102122 is a deficient number, since it is larger than the sum of its proper divisors (10367683990).

20001102122 is a wasteful number, since it uses less digits than its factorization.

20001102122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22573.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20001102122 its reverse (22120110002), we get a palindrome (42121212124).

The spelling of 20001102122 in words is "twenty billion, one million, one hundred two thousand, one hundred twenty-two".