2001212055 has 64 divisors (see below), whose sum is σ = 3630720000. Its totient is φ = 1045560960.

The previous prime is 2001212047. The next prime is 2001212093. The reversal of 2001212055 is 5502121002.

It is not a de Polignac number, because 2001212055 - 2³ = 2001212047 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4010196 + ... + 4010694.

It is an arithmetic number, because the mean of its divisors is an integer number (56730000).

Almost surely, 2^2001212055 is an apocalyptic number.

2001212055 is a deficient number, since it is larger than the sum of its proper divisors (1629507945).

2001212055 is a wasteful number, since it uses less digits than its factorization.

2001212055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061 (or 1055 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 2001212055 is about 44734.9086843820. The cubic root of 2001212055 is about 1260.1755140990.

Adding to 2001212055 its reverse (5502121002), we get a palindrome (7503333057).

The spelling of 2001212055 in words is "two billion, one million, two hundred twelve thousand, fifty-five".