20420021413311 has 16 divisors (see below), whose sum is σ = 29321887092960. Its totient is φ = 12565811007360.

The previous prime is 20420021413307. The next prime is 20420021413357. The reversal of 20420021413311 is 11331412002402.

It is not a de Polignac number, because 20420021413311 - 2² = 20420021413307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20420021413381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6019456 + ... + 8779173.

It is an arithmetic number, because the mean of its divisors is an integer number (1832617943310).

Almost surely, 2^{20420021413311} is an apocalyptic number.

20420021413311 is a deficient number, since it is larger than the sum of its proper divisors (8901865679649).

20420021413311 is a wasteful number, since it uses less digits than its factorization.

20420021413311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14834026.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 20420021413311 its reverse (11331412002402), we get a palindrome (31751433415713).

The spelling of 20420021413311 in words is "twenty trillion, four hundred twenty billion, twenty-one million, four hundred thirteen thousand, three hundred eleven".