2211253055240 has 16 divisors (see below), whose sum is σ = 4975319374380. Its totient is φ = 884501222080.

The previous prime is 2211253055197. The next prime is 2211253055243. The reversal of 2211253055240 is 425503521122.

It can be written as a sum of positive squares in 2 ways, for example, as 2117508087556 + 93744967684 = 1455166^2 + 306178^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2211253055197 and 2211253055206.

It is not an unprimeable number, because it can be changed into a prime (2211253055243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27640663151 + ... + 27640663230.

Almost surely, 2^{2211253055240} is an apocalyptic number.

2211253055240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211253055240 is an abundant number, since it is smaller than the sum of its proper divisors (2764066319140).

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

2211253055240 is a wasteful number, since it uses less digits than its factorization.

2211253055240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55281326392 (or 55281326388 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 2211253055240 its reverse (425503521122), we get a palindrome (2636756576362).

The spelling of 2211253055240 in words is "two trillion, two hundred eleven billion, two hundred fifty-three million, fifty-five thousand, two hundred forty".