2115212205 has 16 divisors (see below), whose sum is σ = 3456347904. Its totient is φ = 1104110400.

The previous prime is 2115212201. The next prime is 2115212219. The reversal of 2115212205 is 5022125112.

It is not a de Polignac number, because 2115212205 - 2² = 2115212201 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115212201) 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, 1499446 + ... + 1500855.

It is an arithmetic number, because the mean of its divisors is an integer number (216021744).

Almost surely, 2^2115212205 is an apocalyptic number.

It is an amenable number.

2115212205 is a deficient number, since it is larger than the sum of its proper divisors (1341135699).

2115212205 is a wasteful number, since it uses less digits than its factorization.

2115212205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000356.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 2115212205 is about 45991.4362137127. The cubic root of 2115212205 is about 1283.6638607047.

Adding to 2115212205 its reverse (5022125112), we get a palindrome (7137337317).

The spelling of 2115212205 in words is "two billion, one hundred fifteen million, two hundred twelve thousand, two hundred five".