20021980202 has 16 divisors (see below), whose sum is σ = 34515149760. Its totient is φ = 8532909888.

The previous prime is 20021980159. The next prime is 20021980207. The reversal of 20021980202 is 20208912002.

It is not an unprimeable number, because it can be changed into a prime (20021980207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3992303 + ... + 3997314.

It is an arithmetic number, because the mean of its divisors is an integer number (2157196860).

Almost surely, 2^20021980202 is an apocalyptic number.

20021980202 is a deficient number, since it is larger than the sum of its proper divisors (14493169558).

20021980202 is a wasteful number, since it uses less digits than its factorization.

20021980202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7989805.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 20021980202 in words is "twenty billion, twenty-one million, nine hundred eighty thousand, two hundred two".