2121101082 has 12 divisors (see below), whose sum is σ = 4595719050. Its totient is φ = 707033688.

The previous prime is 2121101071. The next prime is 2121101083. The reversal of 2121101082 is 2801011212.

It can be written as a sum of positive squares in only one way, i.e., 2050187841 + 70913241 = 45279^2 + 8421^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 117838949 = 2121101082 / (2 + 1 + 2 + 1 + 1 + 0 + 1 + 0 + 8 + 2).

It is not an unprimeable number, because it can be changed into a prime (2121101083) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58919457 + ... + 58919492.

Almost surely, 2^2121101082 is an apocalyptic number.

2121101082 is an abundant number, since it is smaller than the sum of its proper divisors (2474617968).

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

2121101082 is a wasteful number, since it uses less digits than its factorization.

2121101082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117838957 (or 117838954 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 2121101082 is about 46055.4131671837. The cubic root of 2121101082 is about 1284.8540224894.

Adding to 2121101082 its reverse (2801011212), we get a palindrome (4922112294).

The spelling of 2121101082 in words is "two billion, one hundred twenty-one million, one hundred one thousand, eighty-two".