20100220002 has 48 divisors (see below), whose sum is σ = 44392416120. Its totient is φ = 6570660096.

The previous prime is 20100219973. The next prime is 20100220009. The reversal of 20100220002 is 20002200102.

It can be written as a sum of positive squares in 4 ways, for example, as 19642302801 + 457917201 = 140151^2 + 21399^2 .

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 (20100220009) 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, 3229998 + ... + 3236214.

Almost surely, 2^20100220002 is an apocalyptic number.

20100220002 is an abundant number, since it is smaller than the sum of its proper divisors (24292196118).

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

20100220002 is a wasteful number, since it uses less digits than its factorization.

20100220002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9667 (or 9664 counting only the distinct ones).

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

Adding to 20100220002 its reverse (20002200102), we get a palindrome (40102420104).

The spelling of 20100220002 in words is "twenty billion, one hundred million, two hundred twenty thousand, two".