10221321222 has 24 divisors (see below), whose sum is σ = 25309938576. Its totient is φ = 2920377456.

The previous prime is 10221321137. The next prime is 10221321239. The reversal of 10221321222 is 22212312201.

10221321222 is a `hidden beast` number, since 102 + 21 + 321 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 10221321195 and 10221321204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40560673 + ... + 40560924.

It is an arithmetic number, because the mean of its divisors is an integer number (1054580774).

Almost surely, 2^10221321222 is an apocalyptic number.

10221321222 is an abundant number, since it is smaller than the sum of its proper divisors (15088617354).

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

10221321222 is a wasteful number, since it uses less digits than its factorization.

10221321222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81121612 (or 81121609 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 10221321222 its reverse (22212312201), we get a palindrome (32433633423).

The spelling of 10221321222 in words is "ten billion, two hundred twenty-one million, three hundred twenty-one thousand, two hundred twenty-two".