212010122210121 has 8 divisors (see below), whose sum is σ = 314089069940960. Its totient is φ = 141340081473396.

The previous prime is 212010122210083. The next prime is 212010122210197. The reversal of 212010122210121 is 121012221010212.

212010122210121 is a `hidden beast` number, since 212 + 0 + 1 + 0 + 122 + 210 + 121 = 666.

It is not a de Polignac number, because 212010122210121 - 2¹⁰ = 212010122209097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212010122210094 and 212010122210103.

It is not an unprimeable number, because it can be changed into a prime (212010122210221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3926113374235 + ... + 3926113374288.

It is an arithmetic number, because the mean of its divisors is an integer number (39261133742620).

Almost surely, 2^{212010122210121} is an apocalyptic number.

It is an amenable number.

212010122210121 is a deficient number, since it is larger than the sum of its proper divisors (102078947730839).

212010122210121 is an equidigital number, since it uses as much as digits as its factorization.

212010122210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7852226748532 (or 7852226748526 counting only the distinct ones).

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

Adding to 212010122210121 its reverse (121012221010212), we get a palindrome (333022343220333).

The spelling of 212010122210121 in words is "two hundred twelve trillion, ten billion, one hundred twenty-two million, two hundred ten thousand, one hundred twenty-one".