20411121342 has 16 divisors (see below), whose sum is σ = 40893993360. Its totient is φ = 6791748672.

The previous prime is 20411121329. The next prime is 20411121377. The reversal of 20411121342 is 24312111402.

It is a super-2 number, since 2×20411121342² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2985913 + ... + 2992740.

It is an arithmetic number, because the mean of its divisors is an integer number (2555874585).

Almost surely, 2^20411121342 is an apocalyptic number.

20411121342 is an abundant number, since it is smaller than the sum of its proper divisors (20482872018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20411121342 is a wasteful number, since it uses less digits than its factorization.

20411121342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5979227.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 20411121342 its reverse (24312111402), we get a palindrome (44723232744).

The spelling of 20411121342 in words is "twenty billion, four hundred eleven million, one hundred twenty-one thousand, three hundred forty-two".