2012220455 has 16 divisors (see below), whose sum is σ = 2794552320. Its totient is φ = 1362340512.

The previous prime is 2012220451. The next prime is 2012220461. The reversal of 2012220455 is 5540222102.

It is a cyclic number.

It is not a de Polignac number, because 2012220455 - 2² = 2012220451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2012220455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012220451) 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, 361109 + ... + 366638.

It is an arithmetic number, because the mean of its divisors is an integer number (174659520).

Almost surely, 2^2012220455 is an apocalyptic number.

2012220455 is a deficient number, since it is larger than the sum of its proper divisors (782331865).

2012220455 is an equidigital number, since it uses as much as digits as its factorization.

2012220455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727838.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 2012220455 is about 44857.7803173541. The cubic root of 2012220455 is about 1262.4819757581.

Adding to 2012220455 its reverse (5540222102), we get a palindrome (7552442557).

The spelling of 2012220455 in words is "two billion, twelve million, two hundred twenty thousand, four hundred fifty-five".