100020210121001 has 4 divisors (see below), whose sum is σ = 100234386160272. Its totient is φ = 99806034081732.

The previous prime is 100020210120979. The next prime is 100020210121003. The reversal of 100020210121001 is 100121012020001.

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 100020210121001 - 2¹⁸ = 100020209858857 is a prime.

It is a super-2 number, since 2×100020210121001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100020210121003) 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, 107088018935 + ... + 107088019868.

It is an arithmetic number, because the mean of its divisors is an integer number (25058596540068).

Almost surely, 2^{100020210121001} is an apocalyptic number.

It is an amenable number.

100020210121001 is a deficient number, since it is larger than the sum of its proper divisors (214176039271).

100020210121001 is an equidigital number, since it uses as much as digits as its factorization.

100020210121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214176039270.

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

Adding to 100020210121001 its reverse (100121012020001), we get a palindrome (200141222141002).

The spelling of 100020210121001 in words is "one hundred trillion, twenty billion, two hundred ten million, one hundred twenty-one thousand, one".