103111031221 has 8 divisors (see below), whose sum is σ = 113073689088. Its totient is φ = 93246528000.

The previous prime is 103111031189. The next prime is 103111031267. The reversal of 103111031221 is 122130111301.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 103111031221 - 2⁵ = 103111031189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103111031195 and 103111031204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103111038221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24536460 + ... + 24540661.

It is an arithmetic number, because the mean of its divisors is an integer number (14134211136).

Almost surely, 2^103111031221 is an apocalyptic number.

103111031221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

103111031221 is a deficient number, since it is larger than the sum of its proper divisors (9962657867).

103111031221 is a wasteful number, since it uses less digits than its factorization.

103111031221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49077323.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 103111031221 its reverse (122130111301), we get a palindrome (225241142522).

The spelling of 103111031221 in words is "one hundred three billion, one hundred eleven million, thirty-one thousand, two hundred twenty-one".