10011022221222 has 64 divisors (see below), whose sum is σ = 24298491974400. Its totient is φ = 3029974698240.

The previous prime is 10011022221199. The next prime is 10011022221227. The reversal of 10011022221222 is 22212222011001.

It is a happy number.

10011022221222 is a `hidden beast` number, since 100 + 110 + 222 + 212 + 22 = 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 = 10011022221195 and 10011022221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011022221227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9698347 + ... + 10680822.

It is an arithmetic number, because the mean of its divisors is an integer number (379663937100).

Almost surely, 2^{10011022221222} is an apocalyptic number.

10011022221222 is an abundant number, since it is smaller than the sum of its proper divisors (14287469753178).

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

10011022221222 is a wasteful number, since it uses less digits than its factorization.

10011022221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20380018 (or 20380012 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 10011022221222 its reverse (22212222011001), we get a palindrome (32223244232223).

The spelling of 10011022221222 in words is "ten trillion, eleven billion, twenty-two million, two hundred twenty-one thousand, two hundred twenty-two".