20011101122 has 4 divisors (see below), whose sum is σ = 30016651686. Its totient is φ = 10005550560.

The previous prime is 20011101113. The next prime is 20011101163. The reversal of 20011101122 is 22110111002.

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., 16700134441 + 3310966681 = 129229^2 + 57541^2 .

It is a super-2 number, since 2×20011101122² (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, 5002775279 + ... + 5002775282.

Almost surely, 2^20011101122 is an apocalyptic number.

20011101122 is a deficient number, since it is larger than the sum of its proper divisors (10005550564).

20011101122 is a wasteful number, since it uses less digits than its factorization.

20011101122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10005550563.

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

Adding to 20011101122 its reverse (22110111002), we get a palindrome (42121212124).

The spelling of 20011101122 in words is "twenty billion, eleven million, one hundred one thousand, one hundred twenty-two".