211000220101221 has 16 divisors (see below), whose sum is σ = 297883046520000. Its totient is φ = 132392124811008.

The previous prime is 211000220101193. The next prime is 211000220101241. The reversal of 211000220101221 is 122101022000112.

It is not a de Polignac number, because 211000220101221 - 2¹⁴ = 211000220084837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211000220101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211000220101241) 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, 46090155 + ... + 50460903.

It is an arithmetic number, because the mean of its divisors is an integer number (18617690407500).

Almost surely, 2^{211000220101221} is an apocalyptic number.

It is an amenable number.

211000220101221 is a deficient number, since it is larger than the sum of its proper divisors (86882826418779).

211000220101221 is a wasteful number, since it uses less digits than its factorization.

211000220101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5317348.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211000220101221 its reverse (122101022000112), we get a palindrome (333101242101333).

The spelling of 211000220101221 in words is "two hundred eleven trillion, two hundred twenty million, one hundred one thousand, two hundred twenty-one".