201122100112 has 20 divisors (see below), whose sum is σ = 389681805916. Its totient is φ = 100559053440.

The previous prime is 201122100079. The next prime is 201122100121. The reversal of 201122100112 is 211001221102.

It can be written as a sum of positive squares in 2 ways, for example, as 66298010256 + 134824089856 = 257484^2 + 367184^2 .

It is a super-2 number, since 2×201122100112² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201122100092 and 201122100101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1030162 + ... + 1209742.

Almost surely, 2^201122100112 is an apocalyptic number.

It is an amenable number.

201122100112 is a deficient number, since it is larger than the sum of its proper divisors (188559705804).

201122100112 is a wasteful number, since it uses less digits than its factorization.

201122100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249586 (or 249580 counting only the distinct ones).

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

Adding to 201122100112 its reverse (211001221102), we get a palindrome (412123321214).

The spelling of 201122100112 in words is "two hundred one billion, one hundred twenty-two million, one hundred thousand, one hundred twelve".