20021101020202 has 32 divisors (see below), whose sum is σ = 31886140078080. Its totient is φ = 9401633841600.

The previous prime is 20021101020199. The next prime is 20021101020209. The reversal of 20021101020202 is 20202010112002.

It is a happy number.

It is a super-2 number, since 2×20021101020202² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20021101020209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4538452 + ... + 7787152.

It is an arithmetic number, because the mean of its divisors is an integer number (996441877440).

Almost surely, 2^{20021101020202} is an apocalyptic number.

20021101020202 is a deficient number, since it is larger than the sum of its proper divisors (11865039057878).

20021101020202 is a wasteful number, since it uses less digits than its factorization.

20021101020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250126.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20021101020202 its reverse (20202010112002), we get a palindrome (40223111132204).

The spelling of 20021101020202 in words is "twenty trillion, twenty-one billion, one hundred one million, twenty thousand, two hundred two".