101002000111021 has 4 divisors (see below), whose sum is σ = 101002038662844. Its totient is φ = 101001961559200.

The previous prime is 101002000111013. The next prime is 101002000111027. The reversal of 101002000111021 is 120111000200101.

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 38430514585225 + 62571485525796 = 6199235^2 + 7910214^2 .

It is a cyclic number.

It is not a de Polignac number, because 101002000111021 - 2³ = 101002000111013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101002000110989 and 101002000111007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101002000111027) 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, 15035050 + ... + 20689531.

It is an arithmetic number, because the mean of its divisors is an integer number (25250509665711).

Almost surely, 2^{101002000111021} is an apocalyptic number.

It is an amenable number.

101002000111021 is a deficient number, since it is larger than the sum of its proper divisors (38551823).

101002000111021 is an equidigital number, since it uses as much as digits as its factorization.

101002000111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38551822.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 101002000111021 its reverse (120111000200101), we get a palindrome (221113000311122).

The spelling of 101002000111021 in words is "one hundred one trillion, two billion, one hundred eleven thousand, twenty-one".