10221122221222 has 32 divisors (see below), whose sum is σ = 17484573821184. Its totient is φ = 4435841810400.

The previous prime is 10221122221187. The next prime is 10221122221229. The reversal of 10221122221222 is 22212222112201.

It is a super-2 number, since 2×10221122221222² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 10221122221193 and 10221122221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221122221229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18187429 + ... + 18740992.

It is an arithmetic number, because the mean of its divisors is an integer number (546392931912).

Almost surely, 2^{10221122221222} is an apocalyptic number.

10221122221222 is a deficient number, since it is larger than the sum of its proper divisors (7263451599962).

10221122221222 is a wasteful number, since it uses less digits than its factorization.

10221122221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36929004.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 10221122221222 its reverse (22212222112201), we get a palindrome (32433344333423).

The spelling of 10221122221222 in words is "ten trillion, two hundred twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-two".