111201121121012 has 12 divisors (see below), whose sum is σ = 209571343651236. Its totient is φ = 51323594363520.

The previous prime is 111201121121003. The next prime is 111201121121053. The reversal of 111201121121012 is 210121121102111.

It can be written as a sum of positive squares in 2 ways, for example, as 48749496983056 + 62451624137956 = 6982084^2 + 7902634^2 .

It is a super-2 number, since 2×111201121121012² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 1069241549189 + ... + 1069241549292.

It is an arithmetic number, because the mean of its divisors is an integer number (17464278637603).

Almost surely, 2^{111201121121012} is an apocalyptic number.

It is an amenable number.

111201121121012 is a deficient number, since it is larger than the sum of its proper divisors (98370222530224).

111201121121012 is a wasteful number, since it uses less digits than its factorization.

111201121121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138483098498 (or 2138483098496 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111201121121012 its reverse (210121121102111), we get a palindrome (321322242223123).

The spelling of 111201121121012 in words is "one hundred eleven trillion, two hundred one billion, one hundred twenty-one million, one hundred twenty-one thousand, twelve".