212221020011121 has 12 divisors (see below), whose sum is σ = 334408880017680. Its totient is φ = 128618800006680.

The previous prime is 212221020011087. The next prime is 212221020011213. The reversal of 212221020011121 is 121110020122212.

212221020011121 is a `hidden beast` number, since 2 + 122 + 210 + 200 + 11 + 121 = 666.

It is not a de Polignac number, because 212221020011121 - 2⁹ = 212221020010609 is a prime.

It is a super-2 number, since 2×212221020011121² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212221020011094 and 212221020011103.

It is not an unprimeable number, because it can be changed into a prime (212221020011521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1071823333291 + ... + 1071823333488.

It is an arithmetic number, because the mean of its divisors is an integer number (27867406668140).

Almost surely, 2^{212221020011121} is an apocalyptic number.

It is an amenable number.

212221020011121 is a deficient number, since it is larger than the sum of its proper divisors (122187860006559).

212221020011121 is a wasteful number, since it uses less digits than its factorization.

212221020011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143646666796 (or 2143646666793 counting only the distinct ones).

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

Adding to 212221020011121 its reverse (121110020122212), we get a palindrome (333331040133333).

The spelling of 212221020011121 in words is "two hundred twelve trillion, two hundred twenty-one billion, twenty million, eleven thousand, one hundred twenty-one".