103111221131 has 4 divisors (see below), whose sum is σ = 103115304600. Its totient is φ = 103107137664.

The previous prime is 103111221091. The next prime is 103111221137. The reversal of 103111221131 is 131122111301.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 103111221131 - 2⁶ = 103111221067 is a prime.

It is a super-2 number, since 2×103111221131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103111221137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2003621 + ... + 2054438.

It is an arithmetic number, because the mean of its divisors is an integer number (25778826150).

Almost surely, 2^103111221131 is an apocalyptic number.

103111221131 is a deficient number, since it is larger than the sum of its proper divisors (4083469).

103111221131 is an equidigital number, since it uses as much as digits as its factorization.

103111221131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4083468.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 103111221131 its reverse (131122111301), we get a palindrome (234233332432).

The spelling of 103111221131 in words is "one hundred three billion, one hundred eleven million, two hundred twenty-one thousand, one hundred thirty-one".