201120001002121 has 8 divisors (see below), whose sum is σ = 208087335520200. Its totient is φ = 194154810622080.

The previous prime is 201120001002101. The next prime is 201120001002169. The reversal of 201120001002121 is 121200100021102.

It can be written as a sum of positive squares in 4 ways, for example, as 4861755993721 + 196258245008400 = 2204939^2 + 14009220^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201120001002121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201120001002101) 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, 535843660 + ... + 536218861.

It is an arithmetic number, because the mean of its divisors is an integer number (26010916940025).

Almost surely, 2^{201120001002121} is an apocalyptic number.

It is an amenable number.

201120001002121 is a deficient number, since it is larger than the sum of its proper divisors (6967334518079).

201120001002121 is a wasteful number, since it uses less digits than its factorization.

201120001002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072069019.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201120001002121 its reverse (121200100021102), we get a palindrome (322320101023223).

The spelling of 201120001002121 in words is "two hundred one trillion, one hundred twenty billion, one million, two thousand, one hundred twenty-one".