2240121555 has 32 divisors (see below), whose sum is σ = 4551360000. Its totient is φ = 1024055136.

The previous prime is 2240121529. The next prime is 2240121571. The reversal of 2240121555 is 5551210422.

It is not a de Polignac number, because 2240121555 - 2¹¹ = 2240119507 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1184305 + ... + 1186194.

It is an arithmetic number, because the mean of its divisors is an integer number (142230000).

Almost surely, 2^2240121555 is an apocalyptic number.

2240121555 is an abundant number, since it is smaller than the sum of its proper divisors (2311238445).

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

2240121555 is a wasteful number, since it uses less digits than its factorization.

2240121555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370520 (or 2370514 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 2240121555 is about 47329.9224064439. The cubic root of 2240121555 is about 1308.4501911750.

Adding to 2240121555 its reverse (5551210422), we get a palindrome (7791331977).

It can be divided in two parts, 22401 and 21555, that added together give a triangular number (43956 = T₂₉₆).

The spelling of 2240121555 in words is "two billion, two hundred forty million, one hundred twenty-one thousand, five hundred fifty-five".