20023121210 has 64 divisors (see below), whose sum is σ = 37727091360. Its totient is φ = 7645102080.

The previous prime is 20023121197. The next prime is 20023121213. The reversal of 20023121210 is 1212132002.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 2808894001 + 17214227209 = 52999^2 + 131203^2 .

It is a super-3 number, since 3×20023121210³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20023121213) 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 31 ways as a sum of consecutive naturals, for example, 3536702 + ... + 3542358.

Almost surely, 2^20023121210 is an apocalyptic number.

20023121210 is a deficient number, since it is larger than the sum of its proper divisors (17703970150).

20023121210 is a wasteful number, since it uses less digits than its factorization.

20023121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5891.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20023121210 its reverse (1212132002), we get a palindrome (21235253212).

The spelling of 20023121210 in words is "twenty billion, twenty-three million, one hundred twenty-one thousand, two hundred ten".