20102212212202 has 16 divisors (see below), whose sum is σ = 31929790910472. Its totient is φ = 9459050352640.

The previous prime is 20102212212133. The next prime is 20102212212209. The reversal of 20102212212202 is 20221221220102.

It can be written as a sum of positive squares in 4 ways, for example, as 17777194122601 + 2325018089601 = 4216301^2 + 1524801^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20102212212202.

It is not an unprimeable number, because it can be changed into a prime (20102212212209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25043383 + ... + 25833610.

Almost surely, 2^{20102212212202} is an apocalyptic number.

20102212212202 is a deficient number, since it is larger than the sum of its proper divisors (11827578698270).

20102212212202 is a wasteful number, since it uses less digits than its factorization.

20102212212202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50888633.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20102212212202 its reverse (20221221220102), we get a palindrome (40323433432304).

The spelling of 20102212212202 in words is "twenty trillion, one hundred two billion, two hundred twelve million, two hundred twelve thousand, two hundred two".