212102021112121 has 8 divisors (see below), whose sum is σ = 255160326150080. Its totient is φ = 172233220151088.

The previous prime is 212102021112119. The next prime is 212102021112133. The reversal of 212102021112121 is 121211120201212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212102021112121 - 2¹ = 212102021112119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212102021112721) 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, 797376019086 + ... + 797376019351.

It is an arithmetic number, because the mean of its divisors is an integer number (31895040768760).

Almost surely, 2^{212102021112121} is an apocalyptic number.

It is an amenable number.

212102021112121 is a deficient number, since it is larger than the sum of its proper divisors (43058305037959).

212102021112121 is a wasteful number, since it uses less digits than its factorization.

212102021112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594752038463.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212102021112121 its reverse (121211120201212), we get a palindrome (333313141313333).

The spelling of 212102021112121 in words is "two hundred twelve trillion, one hundred two billion, twenty-one million, one hundred twelve thousand, one hundred twenty-one".