103202123021 has 4 divisors (see below), whose sum is σ = 107689171872. Its totient is φ = 98715074172.

The previous prime is 103202123009. The next prime is 103202123041. The reversal of 103202123021 is 120321202301.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120321202301 = 743 ⋅161939707.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103202123021 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 (103202123041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2243524391 + ... + 2243524436.

It is an arithmetic number, because the mean of its divisors is an integer number (26922292968).

Almost surely, 2^103202123021 is an apocalyptic number.

It is an amenable number.

103202123021 is a deficient number, since it is larger than the sum of its proper divisors (4487048851).

103202123021 is an equidigital number, since it uses as much as digits as its factorization.

103202123021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4487048850.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 103202123021 its reverse (120321202301), we get a palindrome (223523325322).

The spelling of 103202123021 in words is "one hundred three billion, two hundred two million, one hundred twenty-three thousand, twenty-one".