21020220002202 has 16 divisors (see below), whose sum is σ = 42195570782592. Its totient is φ = 6980884871040.

The previous prime is 21020220002167. The next prime is 21020220002273. The reversal of 21020220002202 is 20220002202012.

It is a super-3 number, since 3×21020220002202³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6463780663 + ... + 6463783914.

It is an arithmetic number, because the mean of its divisors is an integer number (2637223173912).

Almost surely, 2^{21020220002202} is an apocalyptic number.

21020220002202 is an abundant number, since it is smaller than the sum of its proper divisors (21175350780390).

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

21020220002202 is a wasteful number, since it uses less digits than its factorization.

21020220002202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12927564853.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 21020220002202 its reverse (20220002202012), we get a palindrome (41240222204214).

The spelling of 21020220002202 in words is "twenty-one trillion, twenty billion, two hundred twenty million, two thousand, two hundred two".