103121221023 has 12 divisors (see below), whose sum is σ = 148955993368. Its totient is φ = 68746041360.

The previous prime is 103121221013. The next prime is 103121221039. The reversal of 103121221023 is 320122121301.

It is not a de Polignac number, because 103121221023 - 2¹² = 103121216927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103121220987 and 103121221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103121221013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 505413 + ... + 679473.

Almost surely, 2^103121221023 is an apocalyptic number.

103121221023 is a deficient number, since it is larger than the sum of its proper divisors (45834772345).

103121221023 is a wasteful number, since it uses less digits than its factorization.

103121221023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239894 (or 239891 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 103121221023 its reverse (320122121301), we get a palindrome (423243342324).

The spelling of 103121221023 in words is "one hundred three billion, one hundred twenty-one million, two hundred twenty-one thousand, twenty-three".