103111012121 has 16 divisors (see below), whose sum is σ = 113454071808. Its totient is φ = 93128788800.

The previous prime is 103111012093. The next prime is 103111012139. The reversal of 103111012121 is 121210111301.

It is a cyclic number.

It is not a de Polignac number, because 103111012121 - 2¹⁸ = 103110749977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103111012096 and 103111012105.

It is not an unprimeable number, because it can be changed into a prime (103111012171) 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, 188921 + ... + 491846.

It is an arithmetic number, because the mean of its divisors is an integer number (7090879488).

Almost surely, 2^103111012121 is an apocalyptic number.

It is an amenable number.

103111012121 is a deficient number, since it is larger than the sum of its proper divisors (10343059687).

103111012121 is a wasteful number, since it uses less digits than its factorization.

103111012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681032.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 103111012121 its reverse (121210111301), we get a palindrome (224321123422).

The spelling of 103111012121 in words is "one hundred three billion, one hundred eleven million, twelve thousand, one hundred twenty-one".