212431121211 has 8 divisors (see below), whose sum is σ = 283326133824. Its totient is φ = 141578428040.

The previous prime is 212431121209. The next prime is 212431121237. The reversal of 212431121211 is 112121134212.

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 212431121211 - 2¹ = 212431121209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212431125211) 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, 10568145 + ... + 10588226.

It is an arithmetic number, because the mean of its divisors is an integer number (35415766728).

Almost surely, 2^212431121211 is an apocalyptic number.

212431121211 is a deficient number, since it is larger than the sum of its proper divisors (70895012613).

212431121211 is a wasteful number, since it uses less digits than its factorization.

212431121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21159721.

The product of its digits is 192, while the sum is 21.

Adding to 212431121211 its reverse (112121134212), we get a palindrome (324552255423).

The spelling of 212431121211 in words is "two hundred twelve billion, four hundred thirty-one million, one hundred twenty-one thousand, two hundred eleven".