20302203021 has 16 divisors (see below), whose sum is σ = 27206419968. Its totient is φ = 13466510000.

The previous prime is 20302203013. The next prime is 20302203023. The reversal of 20302203021 is 12030220302.

It is a cyclic number.

It is not a de Polignac number, because 20302203021 - 2³ = 20302203013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302203023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 717280 + ... + 745046.

It is an arithmetic number, because the mean of its divisors is an integer number (1700401248).

Almost surely, 2^20302203021 is an apocalyptic number.

It is an amenable number.

20302203021 is a deficient number, since it is larger than the sum of its proper divisors (6904216947).

20302203021 is a wasteful number, since it uses less digits than its factorization.

20302203021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28992.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20302203021 its reverse (12030220302), we get a palindrome (32332423323).

The spelling of 20302203021 in words is "twenty billion, three hundred two million, two hundred three thousand, twenty-one".