2211220112454 has 80 divisors (see below), whose sum is σ = 5089436778096. Its totient is φ = 717046344000.

The previous prime is 2211220112419. The next prime is 2211220112459. The reversal of 2211220112454 is 4542110221122.

2211220112454 is a `hidden beast` number, since 2 + 2 + 1 + 1 + 2 + 201 + 1 + 2 + 454 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211220112459) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 47335249 + ... + 47381939.

Almost surely, 2^{2211220112454} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2211220112454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2544718389048).

2211220112454 is an abundant number, since it is smaller than the sum of its proper divisors (2878216665642).

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

2211220112454 is a wasteful number, since it uses less digits than its factorization.

2211220112454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54643 (or 54634 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

Adding to 2211220112454 its reverse (4542110221122), we get a palindrome (6753330333576).

The spelling of 2211220112454 in words is "two trillion, two hundred eleven billion, two hundred twenty million, one hundred twelve thousand, four hundred fifty-four".