1022112021 has 48 divisors (see below), whose sum is σ = 1639268928. Its totient is φ = 564480000.

The previous prime is 1022111999. The next prime is 1022112023. The reversal of 1022112021 is 1202112201.

1022112021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1022112021 - 2¹⁸ = 1021849877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1022111988 and 1022112006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022112023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 637621 + ... + 639221.

It is an arithmetic number, because the mean of its divisors is an integer number (34151436).

Almost surely, 2^1022112021 is an apocalyptic number.

It is an amenable number.

1022112021 is a deficient number, since it is larger than the sum of its proper divisors (617156907).

1022112021 is a wasteful number, since it uses less digits than its factorization.

1022112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762 (or 1755 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1022112021 is about 31970.4867182219. The cubic root of 1022112021 is about 1007.3170045307.

Adding to 1022112021 its reverse (1202112201), we get a palindrome (2224224222).

The spelling of 1022112021 in words is "one billion, twenty-two million, one hundred twelve thousand, twenty-one".