212102201121 has 8 divisors (see below), whose sum is σ = 282805062624. Its totient is φ = 141400403520.

The previous prime is 212102201107. The next prime is 212102201137. The reversal of 212102201121 is 121102201212.

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

It is not a de Polignac number, because 212102201121 - 2³⁰ = 211028459297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212102201121.

It is not an unprimeable number, because it can be changed into a prime (212102201141) 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, 642406 + ... + 914816.

It is an arithmetic number, because the mean of its divisors is an integer number (35350632828).

Almost surely, 2^212102201121 is an apocalyptic number.

It is an amenable number.

212102201121 is a deficient number, since it is larger than the sum of its proper divisors (70702861503).

212102201121 is a wasteful number, since it uses less digits than its factorization.

212102201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531951.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212102201121 its reverse (121102201212), we get a palindrome (333204402333).

Subtracting from 212102201121 its reverse (121102201212), we obtain a palindrome (90999999909).

The spelling of 212102201121 in words is "two hundred twelve billion, one hundred two million, two hundred one thousand, one hundred twenty-one".