201123010121 has 8 divisors (see below), whose sum is σ = 219506091264. Its totient is φ = 182756457520.

The previous prime is 201123010103. The next prime is 201123010133. The reversal of 201123010121 is 121010321102.

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-201123010121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201123010096 and 201123010105.

It is not an unprimeable number, because it can be changed into a prime (201123010141) 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, 4106681 + ... + 4155366.

It is an arithmetic number, because the mean of its divisors is an integer number (27438261408).

Almost surely, 2^201123010121 is an apocalyptic number.

It is an amenable number.

201123010121 is a deficient number, since it is larger than the sum of its proper divisors (18383081143).

201123010121 is a wasteful number, since it uses less digits than its factorization.

201123010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8264271.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 201123010121 its reverse (121010321102), we get a palindrome (322133331223).

The spelling of 201123010121 in words is "two hundred one billion, one hundred twenty-three million, ten thousand, one hundred twenty-one".