22021010012 has 6 divisors (see below), whose sum is σ = 38536767528. Its totient is φ = 11010505004.

The previous prime is 22021009979. The next prime is 22021010057. The reversal of 22021010012 is 21001012022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22021009975 and 22021010002.

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, 2752626248 + ... + 2752626255.

It is an arithmetic number, because the mean of its divisors is an integer number (6422794588).

Almost surely, 2^22021010012 is an apocalyptic number.

It is an amenable number.

22021010012 is a deficient number, since it is larger than the sum of its proper divisors (16515757516).

22021010012 is a wasteful number, since it uses less digits than its factorization.

22021010012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5505252507 (or 5505252505 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22021010012 its reverse (21001012022), we get a palindrome (43022022034).

The spelling of 22021010012 in words is "twenty-two billion, twenty-one million, ten thousand, twelve".