212212002110121 has 24 divisors (see below), whose sum is σ = 330108152333960. Its totient is φ = 130591766509056.

The previous prime is 212212002110117. The next prime is 212212002110183. The reversal of 212212002110121 is 121011200212212.

212212002110121 is a `hidden beast` number, since 21 + 221 + 200 + 211 + 0 + 12 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 48307204521 + 212163694905600 = 219789^2 + 14565840^2 .

It is not a de Polignac number, because 212212002110121 - 2² = 212212002110117 is a prime.

It is a super-2 number, since 2×212212002110121² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212212002110094 and 212212002110103.

It is not an unprimeable number, because it can be changed into a prime (212212002110621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81960075 + ... + 84509631.

Almost surely, 2^{212212002110121} is an apocalyptic number.

It is an amenable number.

212212002110121 is a deficient number, since it is larger than the sum of its proper divisors (117896150223839).

212212002110121 is a wasteful number, since it uses less digits than its factorization.

212212002110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3260985 (or 3260982 counting only the distinct ones).

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

Adding to 212212002110121 its reverse (121011200212212), we get a palindrome (333223202322333).

The spelling of 212212002110121 in words is "two hundred twelve trillion, two hundred twelve billion, two million, one hundred ten thousand, one hundred twenty-one".