20250450121 has 4 divisors (see below), whose sum is σ = 22091400144. Its totient is φ = 18409500100.

The previous prime is 20250450047. The next prime is 20250450149. The reversal of 20250450121 is 12105405202.

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 20250450121 - 2⁷ = 20250449993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20250450092 and 20250450101.

It is not an unprimeable number, because it can be changed into a prime (20250450721) 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, 920474995 + ... + 920475016.

It is an arithmetic number, because the mean of its divisors is an integer number (5522850036).

Almost surely, 2^20250450121 is an apocalyptic number.

It is an amenable number.

20250450121 is a deficient number, since it is larger than the sum of its proper divisors (1840950023).

20250450121 is a wasteful number, since it uses less digits than its factorization.

20250450121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840950022.

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 20250450121 its reverse (12105405202), we get a palindrome (32355855323).

The spelling of 20250450121 in words is "twenty billion, two hundred fifty million, four hundred fifty thousand, one hundred twenty-one".