20250113121 has 24 divisors (see below), whose sum is σ = 33622006080. Its totient is φ = 11504599776.

The previous prime is 20250113099. The next prime is 20250113179. The reversal of 20250113121 is 12131105202.

It is not a de Polignac number, because 20250113121 - 2²⁵ = 20216558689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20250113094 and 20250113103.

It is not an unprimeable number, because it can be changed into a prime (20250115121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 918091 + ... + 939888.

It is an arithmetic number, because the mean of its divisors is an integer number (1400916920).

Almost surely, 2^20250113121 is an apocalyptic number.

20250113121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20250113121 is a deficient number, since it is larger than the sum of its proper divisors (13371892959).

20250113121 is a wasteful number, since it uses less digits than its factorization.

20250113121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858165 (or 1858162 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 20250113121 its reverse (12131105202), we get a palindrome (32381218323).

The spelling of 20250113121 in words is "twenty billion, two hundred fifty million, one hundred thirteen thousand, one hundred twenty-one".