2021219768 has 8 divisors (see below), whose sum is σ = 3789787080. Its totient is φ = 1010609880.

The previous prime is 2021219741. The next prime is 2021219807. The reversal of 2021219768 is 8679121202.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126326228 + ... + 126326243.

It is an arithmetic number, because the mean of its divisors is an integer number (473723385).

Almost surely, 2^2021219768 is an apocalyptic number.

It is an amenable number.

2021219768 is a deficient number, since it is larger than the sum of its proper divisors (1768567312).

2021219768 is a wasteful number, since it uses less digits than its factorization.

2021219768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252652477 (or 252652473 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 2021219768 is about 44957.9778014981. The cubic root of 2021219768 is about 1264.3612554320.

The spelling of 2021219768 in words is "two billion, twenty-one million, two hundred nineteen thousand, seven hundred sixty-eight".