201121120200221 has 16 divisors (see below), whose sum is σ = 216681906954240. Its totient is φ = 185573187855360.

The previous prime is 201121120200179. The next prime is 201121120200251. The reversal of 201121120200221 is 122002021121102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201121120200221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201121120200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201121120200251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 741376676 + ... + 741647906.

It is an arithmetic number, because the mean of its divisors is an integer number (13542619184640).

Almost surely, 2^{201121120200221} is an apocalyptic number.

It is an amenable number.

201121120200221 is a deficient number, since it is larger than the sum of its proper divisors (15560786754019).

201121120200221 is a wasteful number, since it uses less digits than its factorization.

201121120200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294716.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201121120200221 its reverse (122002021121102), we get a palindrome (323123141321323).

The spelling of 201121120200221 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twenty million, two hundred thousand, two hundred twenty-one".