100220121200201 has 4 divisors (see below), whose sum is σ = 100231037244804. Its totient is φ = 100209205155600.

The previous prime is 100220121200191. The next prime is 100220121200239. The reversal of 100220121200201 is 102002121022001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74068812792976 + 26151308407225 = 8606324^2 + 5113835^2 .

It is a cyclic number.

It is not a de Polignac number, because 100220121200201 - 2¹⁸ = 100220120938057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100220123200201) 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, 5458008530 + ... + 5458026891.

It is an arithmetic number, because the mean of its divisors is an integer number (25057759311201).

Almost surely, 2^{100220121200201} is an apocalyptic number.

It is an amenable number.

100220121200201 is a deficient number, since it is larger than the sum of its proper divisors (10916044603).

100220121200201 is an equidigital number, since it uses as much as digits as its factorization.

100220121200201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10916044602.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100220121200201 its reverse (102002121022001), we get a palindrome (202222242222202).

The spelling of 100220121200201 in words is "one hundred trillion, two hundred twenty billion, one hundred twenty-one million, two hundred thousand, two hundred one".