111212012201012 has 48 divisors (see below), whose sum is σ = 196929737140752. Its totient is φ = 54949360435200.

The previous prime is 111212012200979. The next prime is 111212012201023. The reversal of 111212012201012 is 210102210212111.

It can be written as a sum of positive squares in 8 ways, for example, as 5536778417296 + 105675233783716 = 2353036^2 + 10279846^2 .

It is a super-2 number, since 2×111212012201012² (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 15 ways as a sum of consecutive naturals, for example, 1113172262 + ... + 1113272162.

It is an arithmetic number, because the mean of its divisors is an integer number (4102702857099).

Almost surely, 2^{111212012201012} is an apocalyptic number.

It is an amenable number.

111212012201012 is a deficient number, since it is larger than the sum of its proper divisors (85717724939740).

111212012201012 is a wasteful number, since it uses less digits than its factorization.

111212012201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107348 (or 107346 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111212012201012 its reverse (210102210212111), we get a palindrome (321314222413123).

The spelling of 111212012201012 in words is "one hundred eleven trillion, two hundred twelve billion, twelve million, two hundred one thousand, twelve".