100201100021021 has 4 divisors (see below), whose sum is σ = 100228247437344. Its totient is φ = 100173952604700.

The previous prime is 100201100020999. The next prime is 100201100021051. The reversal of 100201100021021 is 120120001102001.

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 100201100021021 - 2¹⁰ = 100201100019997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100201100020993 and 100201100021011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100201100021051) 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, 13573702625 + ... + 13573710006.

It is an arithmetic number, because the mean of its divisors is an integer number (25057061859336).

Almost surely, 2^{100201100021021} is an apocalyptic number.

It is an amenable number.

100201100021021 is a deficient number, since it is larger than the sum of its proper divisors (27147416323).

100201100021021 is an equidigital number, since it uses as much as digits as its factorization.

100201100021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27147416322.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100201100021021 its reverse (120120001102001), we get a palindrome (220321101123022).

The spelling of 100201100021021 in words is "one hundred trillion, two hundred one billion, one hundred million, twenty-one thousand, twenty-one".