2240121021 has 16 divisors (see below), whose sum is σ = 3016675200. Its totient is φ = 1478513088.

The previous prime is 2240121019. The next prime is 2240121029. The reversal of 2240121021 is 1201210422.

It is not a de Polignac number, because 2240121021 - 2¹ = 2240121019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2240121029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 602115 + ... + 605823.

It is an arithmetic number, because the mean of its divisors is an integer number (188542200).

Almost surely, 2^2240121021 is an apocalyptic number.

It is an amenable number.

2240121021 is a deficient number, since it is larger than the sum of its proper divisors (776554179).

2240121021 is a wasteful number, since it uses less digits than its factorization.

2240121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5668.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2240121021 is about 47329.9167651920. The cubic root of 2240121021 is about 1308.4500872056.

Adding to 2240121021 its reverse (1201210422), we get a palindrome (3441331443).

The spelling of 2240121021 in words is "two billion, two hundred forty million, one hundred twenty-one thousand, twenty-one".