20021212020202 has 4 divisors (see below), whose sum is σ = 30031818030306. Its totient is φ = 10010606010100.

The previous prime is 20021212020143. The next prime is 20021212020217. The reversal of 20021212020202 is 20202021212002.

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., 16855122039001 + 3166089981201 = 4105499^2 + 1779351^2 .

It is a super-2 number, since 2×20021212020202² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005303005049 + ... + 5005303005052.

Almost surely, 2^{20021212020202} is an apocalyptic number.

20021212020202 is a deficient number, since it is larger than the sum of its proper divisors (10010606010104).

20021212020202 is a wasteful number, since it uses less digits than its factorization.

20021212020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010606010103.

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

Adding to 20021212020202 its reverse (20202021212002), we get a palindrome (40223233232204).

The spelling of 20021212020202 in words is "twenty trillion, twenty-one billion, two hundred twelve million, twenty thousand, two hundred two".