20401421024113 has 4 divisors (see below), whose sum is σ = 20401689571648. Its totient is φ = 20401152476580.

The previous prime is 20401421024107. The next prime is 20401421024137. The reversal of 20401421024113 is 31142012410402.

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 20401421024113 - 2¹⁷ = 20401420893041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20401421024513) 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, 134159781 + ... + 134311762.

It is an arithmetic number, because the mean of its divisors is an integer number (5100422392912).

Almost surely, 2^{20401421024113} is an apocalyptic number.

It is an amenable number.

20401421024113 is a deficient number, since it is larger than the sum of its proper divisors (268547535).

20401421024113 is an equidigital number, since it uses as much as digits as its factorization.

20401421024113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268547534.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 20401421024113 its reverse (31142012410402), we get a palindrome (51543433434515).

The spelling of 20401421024113 in words is "twenty trillion, four hundred one billion, four hundred twenty-one million, twenty-four thousand, one hundred thirteen".