83002021 has 4 divisors (see below), whose sum is σ = 83021472. Its totient is φ = 82982572.

The previous prime is 83001991. The next prime is 83002037. The reversal of 83002021 is 12020038.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83002021 - 2¹⁵ = 82969253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83001986 and 83002004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83009021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241 + ... + 12886.

It is an arithmetic number, because the mean of its divisors is an integer number (20755368).

Almost surely, 2^83002021 is an apocalyptic number.

It is an amenable number.

83002021 is a deficient number, since it is larger than the sum of its proper divisors (19451).

83002021 is a wasteful number, since it uses less digits than its factorization.

83002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19450.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 83002021 is about 9110.5444952538. The cubic root of 83002021 is about 436.2106075765.

Adding to 83002021 its reverse (12020038), we get a palindrome (95022059).

The spelling of 83002021 in words is "eighty-three million, two thousand, twenty-one".