212121201120011 has 8 divisors (see below), whose sum is σ = 212955615324864. Its totient is φ = 211288106149120.

The previous prime is 212121201119981. The next prime is 212121201120083. The reversal of 212121201120011 is 110021102121212.

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 212121201120011 - 2¹⁰ = 212121201118987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212121201120911) 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, 329486276 + ... + 330129441.

It is an arithmetic number, because the mean of its divisors is an integer number (26619451915608).

Almost surely, 2^{212121201120011} is an apocalyptic number.

212121201120011 is a deficient number, since it is larger than the sum of its proper divisors (834414204853).

212121201120011 is an equidigital number, since it uses as much as digits as its factorization.

212121201120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659616981.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 212121201120011 its reverse (110021102121212), we get a palindrome (322142303241223).

The spelling of 212121201120011 in words is "two hundred twelve trillion, one hundred twenty-one billion, two hundred one million, one hundred twenty thousand, eleven".