2115211356 has 36 divisors (see below), whose sum is σ = 5434442104. Its totient is φ = 693511200.

The previous prime is 2115211337. The next prime is 2115211369. The reversal of 2115211356 is 6531125112.

2115211356 is a `hidden beast` number, since 2 + 1 + 1 + 521 + 135 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 479410 + ... + 483801.

Almost surely, 2^2115211356 is an apocalyptic number.

It is an amenable number.

2115211356 is an abundant number, since it is smaller than the sum of its proper divisors (3319230748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2115211356 is a wasteful number, since it uses less digits than its factorization.

2115211356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963282 (or 963277 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 2115211356 is about 45991.4269837325. The cubic root of 2115211356 is about 1283.6636889598.

Adding to 2115211356 its reverse (6531125112), we get a palindrome (8646336468).

The spelling of 2115211356 in words is "two billion, one hundred fifteen million, two hundred eleven thousand, three hundred fifty-six".