103111302221 has 4 divisors (see below), whose sum is σ = 103163565372. Its totient is φ = 103059039072.

The previous prime is 103111302211. The next prime is 103111302227. The reversal of 103111302221 is 122203111301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122203111301 = 147827 ⋅826663.

It can be written as a sum of positive squares in 2 ways, for example, as 71014788196 + 32096514025 = 266486^2 + 179155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103111302221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103111302221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103111302227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26128616 + ... + 26132561.

It is an arithmetic number, because the mean of its divisors is an integer number (25790891343).

Almost surely, 2^103111302221 is an apocalyptic number.

It is an amenable number.

103111302221 is a deficient number, since it is larger than the sum of its proper divisors (52263151).

103111302221 is an equidigital number, since it uses as much as digits as its factorization.

103111302221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52263150.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 103111302221 its reverse (122203111301), we get a palindrome (225314413522).

The spelling of 103111302221 in words is "one hundred three billion, one hundred eleven million, three hundred two thousand, two hundred twenty-one".