103120421025 has 24 divisors (see below), whose sum is σ = 170503109920. Its totient is φ = 54994112640.

The previous prime is 103120421003. The next prime is 103120421029. The reversal of 103120421025 is 520124021301.

It is not a de Polignac number, because 103120421025 - 2¹³ = 103120412833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103120420992 and 103120421010.

It is not an unprimeable number, because it can be changed into a prime (103120421029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1554741 + ... + 1619709.

Almost surely, 2^103120421025 is an apocalyptic number.

103120421025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

103120421025 is a deficient number, since it is larger than the sum of its proper divisors (67382688895).

103120421025 is a wasteful number, since it uses less digits than its factorization.

103120421025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86145 (or 86140 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 103120421025 its reverse (520124021301), we get a palindrome (623244442326).

The spelling of 103120421025 in words is "one hundred three billion, one hundred twenty million, four hundred twenty-one thousand, twenty-five".