20221021002 has 64 divisors (see below), whose sum is σ = 50790700800. Its totient is φ = 5333009472.

The previous prime is 20221021001. The next prime is 20221021027. The reversal of 20221021002 is 20012012202.

It is not an unprimeable number, because it can be changed into a prime (20221021001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 351153 + ... + 404660.

It is an arithmetic number, because the mean of its divisors is an integer number (793604700).

Almost surely, 2^20221021002 is an apocalyptic number.

20221021002 is an abundant number, since it is smaller than the sum of its proper divisors (30569679798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20221021002 is a wasteful number, since it uses less digits than its factorization.

20221021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755852 (or 755838 counting only the distinct ones).

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

Adding to 20221021002 its reverse (20012012202), we get a palindrome (40233033204).

The spelling of 20221021002 in words is "twenty billion, two hundred twenty-one million, twenty-one thousand, two".