20412151 has 2 divisors, whose sum is σ = 20412152. Its totient is φ = 20412150.

The previous prime is 20412149. The next prime is 20412157. The reversal of 20412151 is 15121402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20412151 - 2¹ = 20412149 is a prime.

Together with 20412149, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20412157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206075 + 10206076.

It is an arithmetic number, because the mean of its divisors is an integer number (10206076).

Almost surely, 2^20412151 is an apocalyptic number.

20412151 is a deficient number, since it is larger than the sum of its proper divisors (1).

20412151 is an equidigital number, since it uses as much as digits as its factorization.

20412151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 20412151 is about 4517.9808543198. The cubic root of 20412151 is about 273.2936813721.

Adding to 20412151 its reverse (15121402), we get a palindrome (35533553).

The spelling of 20412151 in words is "twenty million, four hundred twelve thousand, one hundred fifty-one".