2030505021 has 48 divisors (see below), whose sum is σ = 3153760896. Its totient is φ = 1255782528.

The previous prime is 2030505017. The next prime is 2030505031. The reversal of 2030505021 is 1205050302.

It is a happy number.

It is not a de Polignac number, because 2030505021 - 2² = 2030505017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2030504985 and 2030505003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2030505031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1396731 + ... + 1398183.

It is an arithmetic number, because the mean of its divisors is an integer number (65703352).

Almost surely, 2^2030505021 is an apocalyptic number.

It is an amenable number.

2030505021 is a deficient number, since it is larger than the sum of its proper divisors (1123255875).

2030505021 is a wasteful number, since it uses less digits than its factorization.

2030505021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682 (or 1679 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 2030505021 is about 45061.1253854140. The cubic root of 2030505021 is about 1266.2944086680.

Adding to 2030505021 its reverse (1205050302), we get a palindrome (3235555323).

The spelling of 2030505021 in words is "two billion, thirty million, five hundred five thousand, twenty-one".