211120200221021 has 16 divisors (see below), whose sum is σ = 259852646323200. Its totient is φ = 167032187054208.

The previous prime is 211120200220999. The next prime is 211120200221093. The reversal of 211120200221021 is 120122002021112.

It is not a de Polignac number, because 211120200221021 - 2⁴² = 206722153709917 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211120200221621) 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, 53438936 + ... + 57253473.

It is an arithmetic number, because the mean of its divisors is an integer number (16240790395200).

Almost surely, 2^{211120200221021} is an apocalyptic number.

It is an amenable number.

211120200221021 is a deficient number, since it is larger than the sum of its proper divisors (48732446102179).

211120200221021 is a wasteful number, since it uses less digits than its factorization.

211120200221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110713388.

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

Adding to 211120200221021 its reverse (120122002021112), we get a palindrome (331242202242133).

The spelling of 211120200221021 in words is "two hundred eleven trillion, one hundred twenty billion, two hundred million, two hundred twenty-one thousand, twenty-one".