1012222122021 has 16 divisors (see below), whose sum is σ = 1635914541120. Its totient is φ = 613467952560.

The previous prime is 1012222121923. The next prime is 1012222122071. The reversal of 1012222122021 is 1202212222101.

It is a happy number.

It is not a de Polignac number, because 1012222122021 - 2⁹ = 1012222121509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012222121985 and 1012222122003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012222122071) 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, 1704077350 + ... + 1704077943.

It is an arithmetic number, because the mean of its divisors is an integer number (102244658820).

Almost surely, 2^{1012222122021} is an apocalyptic number.

1012222122021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1012222122021 is a deficient number, since it is larger than the sum of its proper divisors (623692419099).

1012222122021 is a wasteful number, since it uses less digits than its factorization.

1012222122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3408155313 (or 3408155307 counting only the distinct ones).

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

Adding to 1012222122021 its reverse (1202212222101), we get a palindrome (2214434344122).

The spelling of 1012222122021 in words is "one trillion, twelve billion, two hundred twenty-two million, one hundred twenty-two thousand, twenty-one".