201211122021212 has 48 divisors (see below), whose sum is σ = 371880134398080. Its totient is φ = 94994777332800.

The previous prime is 201211122021163. The next prime is 201211122021263. The reversal of 201211122021212 is 212120221112102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435167387 + ... + 435629517.

It is an arithmetic number, because the mean of its divisors is an integer number (7747502799960).

Almost surely, 2^{201211122021212} is an apocalyptic number.

It is an amenable number.

201211122021212 is a deficient number, since it is larger than the sum of its proper divisors (170669012376868).

201211122021212 is a wasteful number, since it uses less digits than its factorization.

201211122021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481122 (or 481120 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 201211122021212 its reverse (212120221112102), we get a palindrome (413331343133314).

The spelling of 201211122021212 in words is "two hundred one trillion, two hundred eleven billion, one hundred twenty-two million, twenty-one thousand, two hundred twelve".