111211202021122 has 12 divisors (see below), whose sum is σ = 194052199445190. Its totient is φ = 47661943723296.

The previous prime is 111211202021111. The next prime is 111211202021131. The reversal of 111211202021122 is 221120202112111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 110762595433161 + 448606587961 = 10524381^2 + 669781^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111211202021122.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 567404091847 + ... + 567404092042.

Almost surely, 2^{111211202021122} is an apocalyptic number.

111211202021122 is a deficient number, since it is larger than the sum of its proper divisors (82840997424068).

111211202021122 is a wasteful number, since it uses less digits than its factorization.

111211202021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134808183905 (or 1134808183898 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111211202021122 its reverse (221120202112111), we get a palindrome (332331404133233).

The spelling of 111211202021122 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred two million, twenty-one thousand, one hundred twenty-two".