2250011155221 has 12 divisors (see below), whose sum is σ = 3263964683148. Its totient is φ = 1493569635264.

The previous prime is 2250011155157. The next prime is 2250011155261. The reversal of 2250011155221 is 1225511100522.

2250011155221 is a `hidden beast` number, since 2 + 2 + 500 + 1 + 1 + 155 + 2 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 668355300900 + 1581655854321 = 817530^2 + 1257639^2 .

It is not a de Polignac number, because 2250011155221 - 2⁶ = 2250011155157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2250011155261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 536481250 + ... + 536485443.

It is an arithmetic number, because the mean of its divisors is an integer number (271997056929).

Almost surely, 2^{2250011155221} is an apocalyptic number.

It is an amenable number.

2250011155221 is a deficient number, since it is larger than the sum of its proper divisors (1013953527927).

2250011155221 is a wasteful number, since it uses less digits than its factorization.

2250011155221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072966932 (or 1072966929 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

Adding to 2250011155221 its reverse (1225511100522), we get a palindrome (3475522255743).

The spelling of 2250011155221 in words is "two trillion, two hundred fifty billion, eleven million, one hundred fifty-five thousand, two hundred twenty-one".