2101201121 has 8 divisors (see below), whose sum is σ = 2132876544. Its totient is φ = 2069604000.

The previous prime is 2101201117. The next prime is 2101201147. The reversal of 2101201121 is 1211021012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2101201121 - 2² = 2101201117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101251121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35660 + ... + 73986.

It is an arithmetic number, because the mean of its divisors is an integer number (266609568).

Almost surely, 2^2101201121 is an apocalyptic number.

It is an amenable number.

2101201121 is a deficient number, since it is larger than the sum of its proper divisors (31675423).

2101201121 is an equidigital number, since it uses as much as digits as its factorization.

2101201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39151.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2101201121 is about 45838.8603806857. The cubic root of 2101201121 is about 1280.8232661572.

Adding to 2101201121 its reverse (1211021012), we get a palindrome (3312222133).

The spelling of 2101201121 in words is "two billion, one hundred one million, two hundred one thousand, one hundred twenty-one".