210101120120201 has 4 divisors (see below), whose sum is σ = 212181329230404. Its totient is φ = 208020911010000.

The previous prime is 210101120120153. The next prime is 210101120120341. The reversal of 210101120120201 is 102021021101012.

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 127640827134976 + 82460292985225 = 11297824^2 + 9080765^2 .

It is a cyclic number.

It is not a de Polignac number, because 210101120120201 - 2⁶ = 210101120120137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210101120120401) 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, 1040104554950 + ... + 1040104555151.

It is an arithmetic number, because the mean of its divisors is an integer number (53045332307601).

Almost surely, 2^{210101120120201} is an apocalyptic number.

It is an amenable number.

210101120120201 is a deficient number, since it is larger than the sum of its proper divisors (2080209110203).

210101120120201 is a wasteful number, since it uses less digits than its factorization.

210101120120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080209110202.

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

Adding to 210101120120201 its reverse (102021021101012), we get a palindrome (312122141221213).

The spelling of 210101120120201 in words is "two hundred ten trillion, one hundred one billion, one hundred twenty million, one hundred twenty thousand, two hundred one".