20202203021 has 16 divisors (see below), whose sum is σ = 27124637568. Its totient is φ = 14531054400.

The previous prime is 20202203009. The next prime is 20202203027. The reversal of 20202203021 is 12030220202.

It is a cyclic number.

It is not a de Polignac number, because 20202203021 - 2⁶ = 20202202957 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20202202987 and 20202203005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202203027) 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, 10090010 + ... + 10092011.

It is an arithmetic number, because the mean of its divisors is an integer number (1695289848).

Almost surely, 2^20202203021 is an apocalyptic number.

It is an amenable number.

20202203021 is a deficient number, since it is larger than the sum of its proper divisors (6922434547).

20202203021 is a wasteful number, since it uses less digits than its factorization.

20202203021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20182052.

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20202203021 its reverse (12030220202), we get a palindrome (32232423223).

The spelling of 20202203021 in words is "twenty billion, two hundred two million, two hundred three thousand, twenty-one".