1012222021122 has 160 divisors (see below), whose sum is σ = 2539818699264. Its totient is φ = 299203372800.

The previous prime is 1012222021121. The next prime is 1012222021133. The reversal of 1012222021122 is 2211202222101.

It is a happy number.

It is a super-2 number, since 2×1012222021122² (a number of 25 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 = 1012222021095 and 1012222021104.

It is not an unprimeable number, because it can be changed into a prime (1012222021121) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 8887597 + ... + 9000767.

Almost surely, 2^{1012222021122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012222021122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1269909349632).

1012222021122 is an abundant number, since it is smaller than the sum of its proper divisors (1527596678142).

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

1012222021122 is a wasteful number, since it uses less digits than its factorization.

1012222021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113366 (or 113357 counting only the distinct ones).

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

Adding to 1012222021122 its reverse (2211202222101), we get a palindrome (3223424243223).

The spelling of 1012222021122 in words is "one trillion, twelve billion, two hundred twenty-two million, twenty-one thousand, one hundred twenty-two".