20202121002 has 16 divisors (see below), whose sum is σ = 46176276672. Its totient is φ = 5772034560.

The previous prime is 20202120977. The next prime is 20202121007. The reversal of 20202121002 is 20012120202.

It is not an unprimeable number, because it can be changed into a prime (20202121007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240501399 + ... + 240501482.

It is an arithmetic number, because the mean of its divisors is an integer number (2886017292).

Almost surely, 2^20202121002 is an apocalyptic number.

20202121002 is an abundant number, since it is smaller than the sum of its proper divisors (25974155670).

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

20202121002 is a wasteful number, since it uses less digits than its factorization.

20202121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481002893.

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

Adding to 20202121002 its reverse (20012120202), we get a palindrome (40214241204).

The spelling of 20202121002 in words is "twenty billion, two hundred two million, one hundred twenty-one thousand, two".