11212100122 has 16 divisors (see below), whose sum is σ = 17771523840.
Its totient is φ = 5294429712.
The previous prime is 11212100101. The next prime is 11212100143. The reversal of 11212100122 is 22100121211.
It is an interprime number because it is at equal distance from previous prime (11212100101) and next prime (11212100143).
It is a super-2 number, since 2×112121001222 (a number of 21 digits) contains 22 as substring.
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, 1539033 + ... + 1546300.
It is an arithmetic number, because the mean of its divisors is an integer number (1110720240).
Almost surely, 211212100122 is an apocalyptic number.
11212100122 is a deficient number, since it is larger than the sum of its proper divisors (6559423718).
11212100122 is a wasteful number, since it uses less digits than its factorization.
11212100122 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3085437.
The product of its (nonzero) digits is 16, while the sum is 13.
Adding to 11212100122 its reverse (22100121211), we get a palindrome (33312221333).
The spelling of 11212100122 in words is "eleven billion, two hundred twelve million, one hundred thousand, one hundred twenty-two".