10221222122 has 4 divisors (see below), whose sum is σ = 15331833186. Its totient is φ = 5110611060.

The previous prime is 10221222113. The next prime is 10221222181. The reversal of 10221222122 is 22122212201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9287369641 + 933852481 = 96371^2 + 30559^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10221222122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555305529 + ... + 2555305532.

Almost surely, 2^10221222122 is an apocalyptic number.

10221222122 is a deficient number, since it is larger than the sum of its proper divisors (5110611064).

10221222122 is an equidigital number, since it uses as much as digits as its factorization.

10221222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5110611063.

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

Adding to 10221222122 its reverse (22122212201), we get a palindrome (32343434323).

The spelling of 10221222122 in words is "ten billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-two".