211222012200221 has 16 divisors (see below), whose sum is σ = 232155698097600. Its totient is φ = 190582335098880.

The previous prime is 211222012200217. The next prime is 211222012200253. The reversal of 211222012200221 is 122002210222112.

It is a cyclic number.

It is not a de Polignac number, because 211222012200221 - 2² = 211222012200217 is a prime.

It is a super-2 number, since 2×211222012200221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211222012200193 and 211222012200202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222012200271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134083271 + ... + 135649428.

It is an arithmetic number, because the mean of its divisors is an integer number (14509731131100).

Almost surely, 2^{211222012200221} is an apocalyptic number.

It is an amenable number.

211222012200221 is a deficient number, since it is larger than the sum of its proper divisors (20933685897379).

211222012200221 is a wasteful number, since it uses less digits than its factorization.

211222012200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269733244.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 211222012200221 its reverse (122002210222112), we get a palindrome (333224222422333).

The spelling of 211222012200221 in words is "two hundred eleven trillion, two hundred twenty-two billion, twelve million, two hundred thousand, two hundred twenty-one".