10101321021 has 16 divisors (see below), whose sum is σ = 14857922880. Its totient is φ = 6053224320.

The previous prime is 10101321011. The next prime is 10101321031. The reversal of 10101321021 is 12012310101.

It is an interprime number because it is at equal distance from previous prime (10101321011) and next prime (10101321031).

It is not a de Polignac number, because 10101321021 - 2¹⁴ = 10101304637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10101320988 and 10101321006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101321011) 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 15 ways as a sum of consecutive naturals, for example, 1716730 + ... + 1722603.

It is an arithmetic number, because the mean of its divisors is an integer number (928620180).

Almost surely, 2^10101321021 is an apocalyptic number.

10101321021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10101321021 is a deficient number, since it is larger than the sum of its proper divisors (4756601859).

10101321021 is a wasteful number, since it uses less digits than its factorization.

10101321021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3439436.

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

Adding to 10101321021 its reverse (12012310101), we get a palindrome (22113631122).

The spelling of 10101321021 in words is "ten billion, one hundred one million, three hundred twenty-one thousand, twenty-one".