20001111122 has 4 divisors (see below), whose sum is σ = 30001666686. Its totient is φ = 10000555560.

The previous prime is 20001111101. The next prime is 20001111157. The reversal of 20001111122 is 22111110002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19493465161 + 507645961 = 139619^2 + 22531^2 .

It is a super-2 number, since 2×20001111122² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000277779 + ... + 5000277782.

Almost surely, 2^20001111122 is an apocalyptic number.

20001111122 is a deficient number, since it is larger than the sum of its proper divisors (10000555564).

20001111122 is a wasteful number, since it uses less digits than its factorization.

20001111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10000555563.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20001111122 its reverse (22111110002), we get a palindrome (42112221124).

The spelling of 20001111122 in words is "twenty billion, one million, one hundred eleven thousand, one hundred twenty-two".