1210111212131 has 16 divisors (see below), whose sum is σ = 1217997043200. Its totient is φ = 1202252129568.

The previous prime is 1210111212097. The next prime is 1210111212151. The reversal of 1210111212131 is 1312121110121.

It is a cyclic number.

It is not a de Polignac number, because 1210111212131 - 2¹⁴ = 1210111195747 is a prime.

It is a super-2 number, since 2×1210111212131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210111212151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278889560 + ... + 278893898.

It is an arithmetic number, because the mean of its divisors is an integer number (76124815200).

Almost surely, 2^{1210111212131} is an apocalyptic number.

1210111212131 is a deficient number, since it is larger than the sum of its proper divisors (7885831069).

1210111212131 is a wasteful number, since it uses less digits than its factorization.

1210111212131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7018.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 1210111212131 its reverse (1312121110121), we get a palindrome (2522232322252).

The spelling of 1210111212131 in words is "one trillion, two hundred ten billion, one hundred eleven million, two hundred twelve thousand, one hundred thirty-one".