20001002202 has 48 divisors (see below), whose sum is σ = 45120315240. Its totient is φ = 6397747200.

The previous prime is 20001002201. The next prime is 20001002221. The reversal of 20001002202 is 20220010002.

It can be written as a sum of positive squares in 4 ways, for example, as 1870649001 + 18130353201 = 43251^2 + 134649^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20001002201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177127 + ... + 267162.

Almost surely, 2^20001002202 is an apocalyptic number.

20001002202 is an abundant number, since it is smaller than the sum of its proper divisors (25119313038).

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

20001002202 is a wasteful number, since it uses less digits than its factorization.

20001002202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444399 (or 444396 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20001002202 its reverse (20220010002), we get a palindrome (40221012204).

The spelling of 20001002202 in words is "twenty billion, one million, two thousand, two hundred two".