20021100022202 has 4 divisors (see below), whose sum is σ = 30031650033306. Its totient is φ = 10010550011100.

The previous prime is 20021100022201. The next prime is 20021100022213. The reversal of 20021100022202 is 20222000112002.

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., 15120362257081 + 4900737765121 = 3888491^2 + 2213761^2 .

It is not an unprimeable number, because it can be changed into a prime (20021100022201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005275005549 + ... + 5005275005552.

Almost surely, 2^{20021100022202} is an apocalyptic number.

20021100022202 is a deficient number, since it is larger than the sum of its proper divisors (10010550011104).

20021100022202 is a wasteful number, since it uses less digits than its factorization.

20021100022202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010550011103.

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

Adding to 20021100022202 its reverse (20222000112002), we get a palindrome (40243100134204).

The spelling of 20021100022202 in words is "twenty trillion, twenty-one billion, one hundred million, twenty-two thousand, two hundred two".