111210220131212 has 12 divisors (see below), whose sum is σ = 194756997380400. Its totient is φ = 55565363736816.

The previous prime is 111210220131211. The next prime is 111210220131217. The reversal of 111210220131212 is 212131022012111.

It is a super-3 number, since 3×111210220131212³ (a number of 43 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (111210220131211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9936575903 + ... + 9936587094.

It is an arithmetic number, because the mean of its divisors is an integer number (16229749781700).

Almost surely, 2^{111210220131212} is an apocalyptic number.

It is an amenable number.

111210220131212 is a deficient number, since it is larger than the sum of its proper divisors (83546777249188).

111210220131212 is a wasteful number, since it uses less digits than its factorization.

111210220131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19873164400 (or 19873164398 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 111210220131212 its reverse (212131022012111), we get a palindrome (323341242143323).

The spelling of 111210220131212 in words is "one hundred eleven trillion, two hundred ten billion, two hundred twenty million, one hundred thirty-one thousand, two hundred twelve".