1021020022 has 24 divisors (see below), whose sum is σ = 1694626416. Its totient is φ = 461010000.

The previous prime is 1021020019. The next prime is 1021020029. The reversal of 1021020022 is 2200201201.

It is a junction number, because it is equal to n+sod(n) for n = 1021019990 and 1021020008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021020029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22572 + ... + 50512.

It is an arithmetic number, because the mean of its divisors is an integer number (70609434).

Almost surely, 2^1021020022 is an apocalyptic number.

1021020022 is a deficient number, since it is larger than the sum of its proper divisors (673606394).

1021020022 is a wasteful number, since it uses less digits than its factorization.

1021020022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28116 (or 28105 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1021020022 is about 31953.4039188316. The cubic root of 1021020022 is about 1006.9581459108.

Adding to 1021020022 its reverse (2200201201), we get a palindrome (3221221223).

The spelling of 1021020022 in words is "one billion, twenty-one million, twenty thousand, twenty-two".