20022221201012 has 6 divisors (see below), whose sum is σ = 35038887101778. Its totient is φ = 10011110600504.

The previous prime is 20022221200999. The next prime is 20022221201033. The reversal of 20022221201012 is 21010212222002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11489022086116 + 8533199114896 = 3389546^2 + 2921164^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2502777650123 + ... + 2502777650130.

It is an arithmetic number, because the mean of its divisors is an integer number (5839814516963).

Almost surely, 2^{20022221201012} is an apocalyptic number.

It is an amenable number.

20022221201012 is a deficient number, since it is larger than the sum of its proper divisors (15016665900766).

20022221201012 is a wasteful number, since it uses less digits than its factorization.

20022221201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005555300257 (or 5005555300255 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20022221201012 its reverse (21010212222002), we get a palindrome (41032433423014).

The spelling of 20022221201012 in words is "twenty trillion, twenty-two billion, two hundred twenty-one million, two hundred one thousand, twelve".