201021220200101 has 4 divisors (see below), whose sum is σ = 229738537371552. Its totient is φ = 172303903028652.

The previous prime is 201021220200049. The next prime is 201021220200103. The reversal of 201021220200101 is 101002022120102.

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 201021220200101 - 2¹⁰ = 201021220199077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021220200103) 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, 14358658585715 + ... + 14358658585728.

It is an arithmetic number, because the mean of its divisors is an integer number (57434634342888).

Almost surely, 2^{201021220200101} is an apocalyptic number.

It is an amenable number.

201021220200101 is a deficient number, since it is larger than the sum of its proper divisors (28717317171451).

201021220200101 is an equidigital number, since it uses as much as digits as its factorization.

201021220200101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28717317171450.

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

Adding to 201021220200101 its reverse (101002022120102), we get a palindrome (302023242320203).

The spelling of 201021220200101 in words is "two hundred one trillion, twenty-one billion, two hundred twenty million, two hundred thousand, one hundred one".