20021020120202 has 16 divisors (see below), whose sum is σ = 30039890262912. Its totient is φ = 10007723757840.

The previous prime is 20021020120183. The next prime is 20021020120219. The reversal of 20021020120202 is 20202102012002.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 110601827 + ... + 110782697.

It is an arithmetic number, because the mean of its divisors is an integer number (1877493141432).

Almost surely, 2^{20021020120202} is an apocalyptic number.

20021020120202 is a deficient number, since it is larger than the sum of its proper divisors (10018870142710).

20021020120202 is a wasteful number, since it uses less digits than its factorization.

20021020120202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195973.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20021020120202 its reverse (20202102012002), we get a palindrome (40223122132204).

The spelling of 20021020120202 in words is "twenty trillion, twenty-one billion, twenty million, one hundred twenty thousand, two hundred two".