212504220055 has 16 divisors (see below), whose sum is σ = 257541397344. Its totient is φ = 168320839680.

The previous prime is 212504220053. The next prime is 212504220113. The reversal of 212504220055 is 550022405212.

It is not a de Polignac number, because 212504220055 - 2¹ = 212504220053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212504220053) 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, 318214 + ... + 725443.

It is an arithmetic number, because the mean of its divisors is an integer number (16096337334).

Almost surely, 2^212504220055 is an apocalyptic number.

212504220055 is a deficient number, since it is larger than the sum of its proper divisors (45037177289).

212504220055 is a wasteful number, since it uses less digits than its factorization.

212504220055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044066.

The product of its (nonzero) digits is 8000, while the sum is 28.

Adding to 212504220055 its reverse (550022405212), we get a palindrome (762526625267).

The spelling of 212504220055 in words is "two hundred twelve billion, five hundred four million, two hundred twenty thousand, fifty-five".