20002221012 has 48 divisors (see below), whose sum is σ = 49435868160. Its totient is φ = 6272842752.

The previous prime is 20002221007. The next prime is 20002221017. The reversal of 20002221012 is 21012220002.

It is an interprime number because it is at equal distance from previous prime (20002221007) and next prime (20002221017).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002221017) 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 15 ways as a sum of consecutive naturals, for example, 570288 + ... + 604344.

It is an arithmetic number, because the mean of its divisors is an integer number (1029913920).

Almost surely, 2^20002221012 is an apocalyptic number.

It is an amenable number.

20002221012 is an abundant number, since it is smaller than the sum of its proper divisors (29433647148).

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

20002221012 is a wasteful number, since it uses less digits than its factorization.

20002221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36960 (or 36958 counting only the distinct ones).

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

Adding to 20002221012 its reverse (21012220002), we get a palindrome (41014441014).

The spelling of 20002221012 in words is "twenty billion, two million, two hundred twenty-one thousand, twelve".