211220022110121 has 24 divisors (see below), whose sum is σ = 306109906427520. Its totient is φ = 140345351449056.

The previous prime is 211220022110113. The next prime is 211220022110131. The reversal of 211220022110121 is 121011220022112.

211220022110121 is a `hidden beast` number, since 2 + 112 + 200 + 221 + 10 + 121 = 666.

It is not a de Polignac number, because 211220022110121 - 2³ = 211220022110113 is a prime.

It is a super-2 number, since 2×211220022110121² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211220022110094 and 211220022110103.

It is not an unprimeable number, because it can be changed into a prime (211220022110101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10570350 + ... + 23112168.

It is an arithmetic number, because the mean of its divisors is an integer number (12754579434480).

Almost surely, 2^{211220022110121} is an apocalyptic number.

It is an amenable number.

211220022110121 is a deficient number, since it is larger than the sum of its proper divisors (94889884317399).

211220022110121 is a wasteful number, since it uses less digits than its factorization.

211220022110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12548045 (or 12548042 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211220022110121 its reverse (121011220022112), we get a palindrome (332231242132233).

The spelling of 211220022110121 in words is "two hundred eleven trillion, two hundred twenty billion, twenty-two million, one hundred ten thousand, one hundred twenty-one".