22021201012 has 6 divisors (see below), whose sum is σ = 38537101778. Its totient is φ = 11010600504.

The previous prime is 22021200917. The next prime is 22021201021. The reversal of 22021201012 is 21010212022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15556076176 + 6465124836 = 124724^2 + 80406^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22021200983 and 22021201001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2752650123 + ... + 2752650130.

Almost surely, 2^22021201012 is an apocalyptic number.

It is an amenable number.

22021201012 is a deficient number, since it is larger than the sum of its proper divisors (16515900766).

22021201012 is a wasteful number, since it uses less digits than its factorization.

22021201012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5505300257 (or 5505300255 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22021201012 its reverse (21010212022), we get a palindrome (43031413034).

It can be divided in two parts, 220212010 and 12, that added together give a palindrome (220212022).

The spelling of 22021201012 in words is "twenty-two billion, twenty-one million, two hundred one thousand, twelve".