212012210210121 has 12 divisors (see below), whose sum is σ = 306895619068272. Its totient is φ = 141038815069176.

The previous prime is 212012210210107. The next prime is 212012210210183. The reversal of 212012210210121 is 121012012210212.

212012210210121 is a `hidden beast` number, since 2 + 120 + 1 + 2 + 210 + 210 + 121 = 666.

It is not a de Polignac number, because 212012210210121 - 2¹³ = 212012210201929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212012210210094 and 212012210210103.

It is not an unprimeable number, because it can be changed into a prime (212012210210221) 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, 25221529251 + ... + 25221537656.

It is an arithmetic number, because the mean of its divisors is an integer number (25574634922356).

Almost surely, 2^{212012210210121} is an apocalyptic number.

It is an amenable number.

212012210210121 is a deficient number, since it is larger than the sum of its proper divisors (94883408858151).

212012210210121 is a wasteful number, since it uses less digits than its factorization.

212012210210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50443067380 (or 50443067377 counting only the distinct ones).

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

Adding to 212012210210121 its reverse (121012012210212), we get a palindrome (333024222420333).

The spelling of 212012210210121 in words is "two hundred twelve trillion, twelve billion, two hundred ten million, two hundred ten thousand, one hundred twenty-one".