2112021155 has 16 divisors (see below), whose sum is σ = 2582330880. Its totient is φ = 1657944288.

The previous prime is 2112021143. The next prime is 2112021199. The reversal of 2112021155 is 5511202112.

It is a cyclic number.

It is not a de Polignac number, because 2112021155 - 2⁸ = 2112020899 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47984 + ... + 80786.

It is an arithmetic number, because the mean of its divisors is an integer number (161395680).

Almost surely, 2^2112021155 is an apocalyptic number.

2112021155 is a deficient number, since it is larger than the sum of its proper divisors (470309725).

2112021155 is a wasteful number, since it uses less digits than its factorization.

2112021155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33050.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 2112021155 is about 45956.7313350286. The cubic root of 2112021155 is about 1283.0180157838.

Adding to 2112021155 its reverse (5511202112), we get a palindrome (7623223267).

The spelling of 2112021155 in words is "two billion, one hundred twelve million, twenty-one thousand, one hundred fifty-five".