21011201122 has 16 divisors (see below), whose sum is σ = 31565589120. Its totient is φ = 10489353408.

The previous prime is 21011201093. The next prime is 21011201149. The reversal of 21011201122 is 22110211012.

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, 4509418 + ... + 4514074.

It is an arithmetic number, because the mean of its divisors is an integer number (1972849320).

Almost surely, 2^21011201122 is an apocalyptic number.

21011201122 is a deficient number, since it is larger than the sum of its proper divisors (10554387998).

21011201122 is a wasteful number, since it uses less digits than its factorization.

21011201122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7665.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21011201122 its reverse (22110211012), we get a palindrome (43121412134).

The spelling of 21011201122 in words is "twenty-one billion, eleven million, two hundred one thousand, one hundred twenty-two".