10101331021021 has 4 divisors (see below), whose sum is σ = 10695526963452. Its totient is φ = 9507135078592.

The previous prime is 10101331021013. The next prime is 10101331021031. The reversal of 10101331021021 is 12012013310101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7652199920121 + 2449131100900 = 2766261^2 + 1564970^2 .

It is a cyclic number.

It is not a de Polignac number, because 10101331021021 - 2³ = 10101331021013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10101331020986 and 10101331021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101331021031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297097971190 + ... + 297097971223.

It is an arithmetic number, because the mean of its divisors is an integer number (2673881740863).

Almost surely, 2^{10101331021021} is an apocalyptic number.

It is an amenable number.

10101331021021 is a deficient number, since it is larger than the sum of its proper divisors (594195942431).

10101331021021 is an equidigital number, since it uses as much as digits as its factorization.

10101331021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594195942430.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 10101331021021 its reverse (12012013310101), we get a palindrome (22113344331122).

The spelling of 10101331021021 in words is "ten trillion, one hundred one billion, three hundred thirty-one million, twenty-one thousand, twenty-one".