100120001102021 has 4 divisors (see below), whose sum is σ = 100122440060544. Its totient is φ = 100117562143500.

The previous prime is 100120001101927. The next prime is 100120001102041. The reversal of 100120001102021 is 120201100021001.

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 a de Polignac number, because none of the positive numbers 2^k-100120001102021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100120001101993 and 100120001102011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100120001102041) 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 3 ways as a sum of consecutive naturals, for example, 1219417685 + ... + 1219499786.

It is an arithmetic number, because the mean of its divisors is an integer number (25030610015136).

Almost surely, 2^{100120001102021} is an apocalyptic number.

It is an amenable number.

100120001102021 is a deficient number, since it is larger than the sum of its proper divisors (2438958523).

100120001102021 is an equidigital number, since it uses as much as digits as its factorization.

100120001102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438958522.

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

Adding to 100120001102021 its reverse (120201100021001), we get a palindrome (220321101123022).

The spelling of 100120001102021 in words is "one hundred trillion, one hundred twenty billion, one million, one hundred two thousand, twenty-one".