210201220201121 has 4 divisors (see below), whose sum is σ = 210201258186432. Its totient is φ = 210201182215812.

The previous prime is 210201220201109. The next prime is 210201220201129. The reversal of 210201220201121 is 121102022102012.

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 210201220201121 - 2³⁰ = 210200146459297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210201220201121.

It is not an unprimeable number, because it can be changed into a prime (210201220201129) 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, 8906645 + ... + 22354658.

It is an arithmetic number, because the mean of its divisors is an integer number (52550314546608).

Almost surely, 2^{210201220201121} is an apocalyptic number.

It is an amenable number.

210201220201121 is a deficient number, since it is larger than the sum of its proper divisors (37985311).

210201220201121 is an equidigital number, since it uses as much as digits as its factorization.

210201220201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37985310.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210201220201121 its reverse (121102022102012), we get a palindrome (331303242303133).

The spelling of 210201220201121 in words is "two hundred ten trillion, two hundred one billion, two hundred twenty million, two hundred one thousand, one hundred twenty-one".