100021021121201 has 4 divisors (see below), whose sum is σ = 100021687496304. Its totient is φ = 100020354746100.

The previous prime is 100021021121183. The next prime is 100021021121213. The reversal of 100021021121201 is 102121120120001.

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-100021021121201 is a prime.

It is a super-3 number, since 3×100021021121201³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100021021921201) 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, 332962355 + ... + 333262616.

It is an arithmetic number, because the mean of its divisors is an integer number (25005421874076).

Almost surely, 2^{100021021121201} is an apocalyptic number.

It is an amenable number.

100021021121201 is a deficient number, since it is larger than the sum of its proper divisors (666375103).

100021021121201 is an equidigital number, since it uses as much as digits as its factorization.

100021021121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666375102.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 100021021121201 its reverse (102121120120001), we get a palindrome (202142141241202).

The spelling of 100021021121201 in words is "one hundred trillion, twenty-one billion, twenty-one million, one hundred twenty-one thousand, two hundred one".