100021010002021 has 4 divisors (see below), whose sum is σ = 102347080002112. Its totient is φ = 97694940001932.

The previous prime is 100021010002019. The next prime is 100021010002027. The reversal of 100021010002021 is 120200010120001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100021010002021 - 2¹ = 100021010002019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100021010001989 and 100021010002007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021010002027) 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, 1163034999981 + ... + 1163035000066.

It is an arithmetic number, because the mean of its divisors is an integer number (25586770000528).

Almost surely, 2^{100021010002021} is an apocalyptic number.

It is an amenable number.

100021010002021 is a deficient number, since it is larger than the sum of its proper divisors (2326070000091).

100021010002021 is an equidigital number, since it uses as much as digits as its factorization.

100021010002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326070000090.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100021010002021 its reverse (120200010120001), we get a palindrome (220221020122022).

The spelling of 100021010002021 in words is "one hundred trillion, twenty-one billion, ten million, two thousand, twenty-one".