402212031211 has 4 divisors (see below), whose sum is σ = 402407947552. Its totient is φ = 402016114872.

The previous prime is 402212031173. The next prime is 402212031289. The reversal of 402212031211 is 112130212204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402212031211 - 2¹³ = 402212023019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402212031911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97955091 + ... + 97959196.

It is an arithmetic number, because the mean of its divisors is an integer number (100601986888).

Almost surely, 2^402212031211 is an apocalyptic number.

402212031211 is a deficient number, since it is larger than the sum of its proper divisors (195916341).

402212031211 is a wasteful number, since it uses less digits than its factorization.

402212031211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195916340.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 402212031211 its reverse (112130212204), we get a palindrome (514342243415).

The spelling of 402212031211 in words is "four hundred two billion, two hundred twelve million, thirty-one thousand, two hundred eleven".