1012222021 has 8 divisors (see below), whose sum is σ = 1044933120. Its totient is φ = 979927872.

The previous prime is 1012221971. The next prime is 1012222027. The reversal of 1012222021 is 1202222101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1012222021 - 2¹⁵ = 1012189253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012221992 and 1012222010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012222027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99301 + ... + 109018.

It is an arithmetic number, because the mean of its divisors is an integer number (130616640).

Almost surely, 2^1012222021 is an apocalyptic number.

It is an amenable number.

1012222021 is a deficient number, since it is larger than the sum of its proper divisors (32711099).

1012222021 is a wasteful number, since it uses less digits than its factorization.

1012222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208475.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1012222021 is about 31815.4368349705. The cubic root of 1012222021 is about 1004.0575212543.

Adding to 1012222021 its reverse (1202222101), we get a palindrome (2214444122).

The spelling of 1012222021 in words is "one billion, twelve million, two hundred twenty-two thousand, twenty-one".