2211387353481 has 4 divisors (see below), whose sum is σ = 2948516471312. Its totient is φ = 1474258235652.

The previous prime is 2211387353477. The next prime is 2211387353521. The reversal of 2211387353481 is 1843537831122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2211387353481 - 2² = 2211387353477 is a prime.

It is a super-3 number, since 3×2211387353481³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2211387353481.

It is not an unprimeable number, because it can be changed into a prime (2211387353471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368564558911 + ... + 368564558916.

It is an arithmetic number, because the mean of its divisors is an integer number (737129117828).

Almost surely, 2^{2211387353481} is an apocalyptic number.

It is an amenable number.

2211387353481 is a deficient number, since it is larger than the sum of its proper divisors (737129117831).

2211387353481 is an equidigital number, since it uses as much as digits as its factorization.

2211387353481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737129117830.

The product of its digits is 967680, while the sum is 48.

The spelling of 2211387353481 in words is "two trillion, two hundred eleven billion, three hundred eighty-seven million, three hundred fifty-three thousand, four hundred eighty-one".