20111220414 has 24 divisors (see below), whose sum is σ = 43581949632. Its totient is φ = 6702564960.

The previous prime is 20111220407. The next prime is 20111220419. The reversal of 20111220414 is 41402211102.

20111220414 is a `hidden beast` number, since 20 + 1 + 11 + 220 + 414 = 666.

It is a super-2 number, since 2×20111220414² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111220419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10867 + ... + 200849.

It is an arithmetic number, because the mean of its divisors is an integer number (1815914568).

Almost surely, 2^20111220414 is an apocalyptic number.

20111220414 is an abundant number, since it is smaller than the sum of its proper divisors (23470729218).

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

20111220414 is a wasteful number, since it uses less digits than its factorization.

20111220414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195872 (or 195869 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20111220414 its reverse (41402211102), we get a palindrome (61513431516).

The spelling of 20111220414 in words is "twenty billion, one hundred eleven million, two hundred twenty thousand, four hundred fourteen".