1012221012222 has 72 divisors (see below), whose sum is σ = 2566487182896. Its totient is φ = 287474189184.

The previous prime is 1012221012169. The next prime is 1012221012241. The reversal of 1012221012222 is 2222101222101.

It is a happy number.

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 = 1012221012195 and 1012221012204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3288763 + ... + 3583350.

It is an arithmetic number, because the mean of its divisors is an integer number (35645655318).

Almost surely, 2^{1012221012222} is an apocalyptic number.

1012221012222 is an abundant number, since it is smaller than the sum of its proper divisors (1554266170674).

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

1012221012222 is a wasteful number, since it uses less digits than its factorization.

1012221012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6872302 (or 6872292 counting only the distinct ones).

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

Adding to 1012221012222 its reverse (2222101222101), we get a palindrome (3234322234323).

The spelling of 1012221012222 in words is "one trillion, twelve billion, two hundred twenty-one million, twelve thousand, two hundred twenty-two".