10221020012 has 24 divisors (see below), whose sum is σ = 20640512256. Its totient is φ = 4337907408.

The previous prime is 10221020003. The next prime is 10221020023. The reversal of 10221020012 is 21002012201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10221019975 and 10221020002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1769138 + ... + 1774905.

It is an arithmetic number, because the mean of its divisors is an integer number (860021344).

Almost surely, 2^10221020012 is an apocalyptic number.

It is an amenable number.

10221020012 is an abundant number, since it is smaller than the sum of its proper divisors (10419492244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10221020012 is a wasteful number, since it uses less digits than its factorization.

10221020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3544157 (or 3544155 counting only the distinct ones).

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

Adding to 10221020012 its reverse (21002012201), we get a palindrome (31223032213).

The spelling of 10221020012 in words is "ten billion, two hundred twenty-one million, twenty thousand, twelve".