2055511252221 has 12 divisors (see below), whose sum is σ = 3188139901632. Its totient is φ = 1174577858328.

The previous prime is 2055511252219. The next prime is 2055511252229. The reversal of 2055511252221 is 1222521155502.

It is not a de Polignac number, because 2055511252221 - 2¹ = 2055511252219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2055511252229) 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, 6991534725 + ... + 6991535018.

It is an arithmetic number, because the mean of its divisors is an integer number (265678325136).

Almost surely, 2^{2055511252221} is an apocalyptic number.

2055511252221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2055511252221 is a deficient number, since it is larger than the sum of its proper divisors (1132628649411).

2055511252221 is a wasteful number, since it uses less digits than its factorization.

2055511252221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13983069760 (or 13983069753 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 33.

The spelling of 2055511252221 in words is "two trillion, fifty-five billion, five hundred eleven million, two hundred fifty-two thousand, two hundred twenty-one".