20111114444442 has 128 divisors (see below), whose sum is σ = 49153941504000. Its totient is φ = 5354683407360.

The previous prime is 20111114444417. The next prime is 20111114444453. The reversal of 20111114444442 is 24444441111102.

It is a happy number.

It is a super-3 number, since 3×20111114444442³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45026092 + ... + 45470552.

It is an arithmetic number, because the mean of its divisors is an integer number (384015168000).

Almost surely, 2^{20111114444442} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20111114444442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24576970752000).

20111114444442 is an abundant number, since it is smaller than the sum of its proper divisors (29042827059558).

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

20111114444442 is a wasteful number, since it uses less digits than its factorization.

20111114444442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445116.

The product of its (nonzero) digits is 16384, while the sum is 33.

Adding to 20111114444442 its reverse (24444441111102), we get a palindrome (44555555555544).

The spelling of 20111114444442 in words is "twenty trillion, one hundred eleven billion, one hundred fourteen million, four hundred forty-four thousand, four hundred forty-two".