11201201212122 has 12 divisors (see below), whose sum is σ = 24269269292970. Its totient is φ = 3733733737368.

The previous prime is 11201201212057. The next prime is 11201201212127. The reversal of 11201201212122 is 22121210210211.

It can be written as a sum of positive squares in only one way, i.e., 10963641477321 + 237559734801 = 3311139^2 + 487401^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 622288956229 = 11201201212122 / (1 + 1 + 2 + 0 + 1 + 2 + 0 + 1 + 2 + 1 + 2 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 11201201212095 and 11201201212104.

It is not an unprimeable number, because it can be changed into a prime (11201201212127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 311144478097 + ... + 311144478132.

Almost surely, 2^{11201201212122} is an apocalyptic number.

11201201212122 is an abundant number, since it is smaller than the sum of its proper divisors (13068068080848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11201201212122 is a wasteful number, since it uses less digits than its factorization.

11201201212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622288956237 (or 622288956234 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11201201212122 its reverse (22121210210211), we get a palindrome (33322411422333).

The spelling of 11201201212122 in words is "eleven trillion, two hundred one billion, two hundred one million, two hundred twelve thousand, one hundred twenty-two".