2101213332 has 24 divisors (see below), whose sum is σ = 5447590400. Its totient is φ = 700404408.

The previous prime is 2101213307. The next prime is 2101213333. The reversal of 2101213332 is 2333121012.

2101213332 is a `hidden beast` number, since 210 + 121 + 3 + 332 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101213333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9727732 + ... + 9727947.

Almost surely, 2^2101213332 is an apocalyptic number.

It is an amenable number.

2101213332 is an abundant number, since it is smaller than the sum of its proper divisors (3346377068).

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

2101213332 is a wasteful number, since it uses less digits than its factorization.

2101213332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19455692 (or 19455684 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2101213332 is about 45838.9935753393. The cubic root of 2101213332 is about 1280.8257472941.

Adding to 2101213332 its reverse (2333121012), we get a palindrome (4434334344).

The spelling of 2101213332 in words is "two billion, one hundred one million, two hundred thirteen thousand, three hundred thirty-two".