210211101201121 has 4 divisors (see below), whose sum is σ = 210211132001472. Its totient is φ = 210211070400772.

The previous prime is 210211101201109. The next prime is 210211101201133. The reversal of 210211101201121 is 121102101112012.

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, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (210211101201109) and next prime (210211101201133).

It is a cyclic number.

It is not a de Polignac number, because 210211101201121 - 2²⁷ = 210210966983393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210211101201095 and 210211101201104.

It is not an unprimeable number, because it can be changed into a prime (210211101201221) 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, 87541 + ... + 20504386.

It is an arithmetic number, because the mean of its divisors is an integer number (52552783000368).

Almost surely, 2^{210211101201121} is an apocalyptic number.

It is an amenable number.

210211101201121 is a deficient number, since it is larger than the sum of its proper divisors (30800351).

210211101201121 is a wasteful number, since it uses less digits than its factorization.

210211101201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30800350.

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

Adding to 210211101201121 its reverse (121102101112012), we get a palindrome (331313202313133).

The spelling of 210211101201121 in words is "two hundred ten trillion, two hundred eleven billion, one hundred one million, two hundred one thousand, one hundred twenty-one".