20112011421 has 8 divisors (see below), whose sum is σ = 26860785600. Its totient is φ = 13385622432.

The previous prime is 20112011393. The next prime is 20112011429. The reversal of 20112011421 is 12411021102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20112011421 - 2²¹ = 20109914269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20112011421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112011429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5594200 + ... + 5597793.

It is an arithmetic number, because the mean of its divisors is an integer number (3357598200).

Almost surely, 2^20112011421 is an apocalyptic number.

It is an amenable number.

20112011421 is a deficient number, since it is larger than the sum of its proper divisors (6748774179).

20112011421 is a wasteful number, since it uses less digits than its factorization.

20112011421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11192595.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20112011421 its reverse (12411021102), we get a palindrome (32523032523).

The spelling of 20112011421 in words is "twenty billion, one hundred twelve million, eleven thousand, four hundred twenty-one".