20251201 has 4 divisors (see below), whose sum is σ = 21131712. Its totient is φ = 19370692.

The previous prime is 20251183. The next prime is 20251211. The reversal of 20251201 is 10215202.

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: 10215202 = 2 ⋅5107601.

It is not a de Polignac number, because 20251201 - 2¹¹ = 20249153 is a prime.

It is a super-2 number, since 2×20251201² = 820222283884802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20251211) 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, 440221 + ... + 440266.

It is an arithmetic number, because the mean of its divisors is an integer number (5282928).

Almost surely, 2^20251201 is an apocalyptic number.

It is an amenable number.

20251201 is a deficient number, since it is larger than the sum of its proper divisors (880511).

20251201 is an equidigital number, since it uses as much as digits as its factorization.

20251201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880510.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 20251201 is about 4500.1334424659. The cubic root of 20251201 is about 272.5734773660.

Adding to 20251201 its reverse (10215202), we get a palindrome (30466403).

The spelling of 20251201 in words is "twenty million, two hundred fifty-one thousand, two hundred one".