211332122200221 has 32 divisors (see below), whose sum is σ = 307804728844800. Its totient is φ = 127908218921280.

The previous prime is 211332122200217. The next prime is 211332122200259. The reversal of 211332122200221 is 122002221233112.

It is not a de Polignac number, because 211332122200221 - 2² = 211332122200217 is a prime.

It is a super-2 number, since 2×211332122200221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211332122200191 and 211332122200200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211332122200321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206601210 + ... + 207621588.

It is an arithmetic number, because the mean of its divisors is an integer number (9618897776400).

Almost surely, 2^{211332122200221} is an apocalyptic number.

It is an amenable number.

211332122200221 is a deficient number, since it is larger than the sum of its proper divisors (96472606644579).

211332122200221 is a wasteful number, since it uses less digits than its factorization.

211332122200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028809.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 211332122200221 its reverse (122002221233112), we get a palindrome (333334343433333).

The spelling of 211332122200221 in words is "two hundred eleven trillion, three hundred thirty-two billion, one hundred twenty-two million, two hundred thousand, two hundred twenty-one".