11311011421444 has 24 divisors (see below), whose sum is σ = 22622311170368. Its totient is φ = 4847514539040.

The previous prime is 11311011421427. The next prime is 11311011421483. The reversal of 11311011421444 is 44412411011311.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303102 + ... + 4765909.

Almost surely, 2^{11311011421444} is an apocalyptic number.

11311011421444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11311011421444 is an abundant number, since it is smaller than the sum of its proper divisors (11311299748924).

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

11311011421444 is a wasteful number, since it uses less digits than its factorization.

11311011421444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5148715 (or 5148713 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

Adding to 11311011421444 its reverse (44412411011311), we get a palindrome (55723422432755).

The spelling of 11311011421444 in words is "eleven trillion, three hundred eleven billion, eleven million, four hundred twenty-one thousand, four hundred forty-four".