10221111021222 has 24 divisors (see below), whose sum is σ = 22365005307840. Its totient is φ = 3373303966800.

The previous prime is 10221111021203. The next prime is 10221111021301. The reversal of 10221111021222 is 22212011112201.

10221111021222 is a `hidden beast` number, since 102 + 211 + 110 + 21 + 222 = 666.

It is a super-2 number, since 2×10221111021222² (a number of 27 digits) contains 22 as substring.

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 = 10221111021195 and 10221111021204.

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, 2811084822 + ... + 2811088457.

It is an arithmetic number, because the mean of its divisors is an integer number (931875221160).

Almost surely, 2^{10221111021222} is an apocalyptic number.

10221111021222 is an abundant number, since it is smaller than the sum of its proper divisors (12143894286618).

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

10221111021222 is a wasteful number, since it uses less digits than its factorization.

10221111021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5622173388 (or 5622173385 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10221111021222 its reverse (22212011112201), we get a palindrome (32433122133423).

The spelling of 10221111021222 in words is "ten trillion, two hundred twenty-one billion, one hundred eleven million, twenty-one thousand, two hundred twenty-two".