20022102021 has 8 divisors (see below), whose sum is σ = 26700407424. Its totient is φ = 13345932320.

The previous prime is 20022102011. The next prime is 20022102097. The reversal of 20022102021 is 12020122002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20022102021 - 2⁵ = 20022101989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20022101988 and 20022102006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022102011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511920 + ... + 549641.

It is an arithmetic number, because the mean of its divisors is an integer number (3337550928).

Almost surely, 2^20022102021 is an apocalyptic number.

It is an amenable number.

20022102021 is a deficient number, since it is larger than the sum of its proper divisors (6678305403).

20022102021 is a wasteful number, since it uses less digits than its factorization.

20022102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067851.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20022102021 its reverse (12020122002), we get a palindrome (32042224023).

The spelling of 20022102021 in words is "twenty billion, twenty-two million, one hundred two thousand, twenty-one".