1030101021 has 24 divisors (see below), whose sum is σ = 1529359104. Its totient is φ = 667798560.

The previous prime is 1030101019. The next prime is 1030101031. The reversal of 1030101021 is 1201010301.

1030101021 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 1030101021 - 2¹ = 1030101019 is a prime.

It is a super-2 number, since 2×1030101021² = 2122216226930484882, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1030100994 and 1030101012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030101031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58656 + ... + 74166.

It is an arithmetic number, because the mean of its divisors is an integer number (63723296).

Almost surely, 2^1030101021 is an apocalyptic number.

It is an amenable number.

1030101021 is a deficient number, since it is larger than the sum of its proper divisors (499258083).

1030101021 is a wasteful number, since it uses less digits than its factorization.

1030101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15721 (or 15718 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1030101021 is about 32095.1868821479. The cubic root of 1030101021 is about 1009.9346495638.

Adding to 1030101021 its reverse (1201010301), we get a palindrome (2231111322).

The spelling of 1030101021 in words is "one billion, thirty million, one hundred one thousand, twenty-one".