201120200021 has 8 divisors (see below), whose sum is σ = 216630941184. Its totient is φ = 185615166960.

The previous prime is 201120199963. The next prime is 201120200023. The reversal of 201120200021 is 120002021102.

It is a happy number.

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-201120200021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201120199975 and 201120200011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201120200023) 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, 1353701 + ... + 1494906.

It is an arithmetic number, because the mean of its divisors is an integer number (27078867648).

Almost surely, 2^201120200021 is an apocalyptic number.

It is an amenable number.

201120200021 is a deficient number, since it is larger than the sum of its proper divisors (15510741163).

201120200021 is a wasteful number, since it uses less digits than its factorization.

201120200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854051.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201120200021 its reverse (120002021102), we get a palindrome (321122221123).

The spelling of 201120200021 in words is "two hundred one billion, one hundred twenty million, two hundred thousand, twenty-one".