103021123121 has 4 divisors (see below), whose sum is σ = 117738426432. Its totient is φ = 88303819812.

The previous prime is 103021123099. The next prime is 103021123193. The reversal of 103021123121 is 121321120301.

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: 121321120301 = 293 ⋅414065257.

It is a cyclic number.

It is not a de Polignac number, because 103021123121 - 2¹⁴ = 103021106737 is a prime.

It is a super-2 number, since 2×103021123121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 103021123121.

It is not an unprimeable number, because it can be changed into a prime (103021123421) 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, 7358651645 + ... + 7358651658.

It is an arithmetic number, because the mean of its divisors is an integer number (29434606608).

Almost surely, 2^103021123121 is an apocalyptic number.

It is an amenable number.

103021123121 is a deficient number, since it is larger than the sum of its proper divisors (14717303311).

103021123121 is an equidigital number, since it uses as much as digits as its factorization.

103021123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14717303310.

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

Adding to 103021123121 its reverse (121321120301), we get a palindrome (224342243422).

The spelling of 103021123121 in words is "one hundred three billion, twenty-one million, one hundred twenty-three thousand, one hundred twenty-one".