2240122521 has 48 divisors (see below), whose sum is σ = 3905197184. Its totient is φ = 1112057856.

The previous prime is 2240122519. The next prime is 2240122523. The reversal of 2240122521 is 1252210422.

It is an interprime number because it is at equal distance from previous prime (2240122519) and next prime (2240122523).

It is not a de Polignac number, because 2240122521 - 2¹ = 2240122519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2240122523) 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, 64701 + ... + 93093.

Almost surely, 2^2240122521 is an apocalyptic number.

2240122521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2240122521 is a deficient number, since it is larger than the sum of its proper divisors (1665074663).

2240122521 is a wasteful number, since it uses less digits than its factorization.

2240122521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28450 (or 28433 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 2240122521 is about 47329.9326114035. The cubic root of 2240122521 is about 1308.4503792545.

Adding to 2240122521 its reverse (1252210422), we get a palindrome (3492332943).

The spelling of 2240122521 in words is "two billion, two hundred forty million, one hundred twenty-two thousand, five hundred twenty-one".