103131222221 has 8 divisors (see below), whose sum is σ = 104057751840. Its totient is φ = 102207329712.

The previous prime is 103131222199. The next prime is 103131222223. The reversal of 103131222221 is 122222131301.

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 103131222221 - 2⁶ = 103131222157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103131222193 and 103131222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103131222223) 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, 580670 + ... + 737183.

It is an arithmetic number, because the mean of its divisors is an integer number (13007218980).

Almost surely, 2^103131222221 is an apocalyptic number.

It is an amenable number.

103131222221 is a deficient number, since it is larger than the sum of its proper divisors (926529619).

103131222221 is a wasteful number, since it uses less digits than its factorization.

103131222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318555.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 103131222221 its reverse (122222131301), we get a palindrome (225353353522).

The spelling of 103131222221 in words is "one hundred three billion, one hundred thirty-one million, two hundred twenty-two thousand, two hundred twenty-one".