103120021213 has 4 divisors (see below), whose sum is σ = 112494568608. Its totient is φ = 93745473820.

The previous prime is 103120021201. The next prime is 103120021223. The reversal of 103120021213 is 312120021301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 103120021213 - 2²¹ = 103117924061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103120021223) 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, 4687273681 + ... + 4687273702.

It is an arithmetic number, because the mean of its divisors is an integer number (28123642152).

Almost surely, 2^103120021213 is an apocalyptic number.

It is an amenable number.

103120021213 is a deficient number, since it is larger than the sum of its proper divisors (9374547395).

103120021213 is an equidigital number, since it uses as much as digits as its factorization.

103120021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9374547394.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 103120021213 its reverse (312120021301), we get a palindrome (415240042514).

The spelling of 103120021213 in words is "one hundred three billion, one hundred twenty million, twenty-one thousand, two hundred thirteen".