20211202020202 has 4 divisors (see below), whose sum is σ = 30316803030306. Its totient is φ = 10105601010100.

The previous prime is 20211202020173. The next prime is 20211202020281. The reversal of 20211202020202 is 20202020211202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16996564590721 + 3214637429481 = 4122689^2 + 1792941^2 .

It is a super-2 number, since 2×20211202020202² (a number of 27 digits) contains 22 as substring.

20211202020202 is a modest number, since divided by 2020202 gives 202112 as remainder.

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 as a sum of consecutive naturals, namely, 5052800505049 + ... + 5052800505052.

Almost surely, 2^{20211202020202} is an apocalyptic number.

20211202020202 is a deficient number, since it is larger than the sum of its proper divisors (10105601010104).

20211202020202 is a wasteful number, since it uses less digits than its factorization.

20211202020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10105601010103.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20211202020202 its reverse (20202020211202), we get a palindrome (40413222231404).

The spelling of 20211202020202 in words is "twenty trillion, two hundred eleven billion, two hundred two million, twenty thousand, two hundred two".