2111244244551 has 48 divisors (see below), whose sum is σ = 3380620029696. Its totient is φ = 1261571770368.

The previous prime is 2111244244513. The next prime is 2111244244591. The reversal of 2111244244551 is 1554424421112.

It is a happy number.

2111244244551 is a `hidden beast` number, since 2 + 1 + 1 + 1 + 24 + 42 + 44 + 551 = 666.

It is not a de Polignac number, because 2111244244551 - 2¹³ = 2111244236359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111244244591) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1153495 + ... + 2356488.

It is an arithmetic number, because the mean of its divisors is an integer number (70429583952).

Almost surely, 2^{2111244244551} is an apocalyptic number.

2111244244551 is a deficient number, since it is larger than the sum of its proper divisors (1269375785145).

2111244244551 is a wasteful number, since it uses less digits than its factorization.

2111244244551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510152 (or 3510149 counting only the distinct ones).

The product of its digits is 51200, while the sum is 36.

Adding to 2111244244551 its reverse (1554424421112), we get a palindrome (3665668665663).

The spelling of 2111244244551 in words is "two trillion, one hundred eleven billion, two hundred forty-four million, two hundred forty-four thousand, five hundred fifty-one".