201212222201 has 12 divisors (see below), whose sum is σ = 210365234688. Its totient is φ = 192441638664.

The previous prime is 201212222131. The next prime is 201212222209. The reversal of 201212222201 is 102222212102.

It is a happy number.

It is not a de Polignac number, because 201212222201 - 2¹⁸ = 201211960057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201212222201.

It is not an unprimeable number, because it can be changed into a prime (201212222209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6259496 + ... + 6291558.

It is an arithmetic number, because the mean of its divisors is an integer number (17530436224).

Almost surely, 2^201212222201 is an apocalyptic number.

It is an amenable number.

201212222201 is a deficient number, since it is larger than the sum of its proper divisors (9153012487).

201212222201 is a wasteful number, since it uses less digits than its factorization.

201212222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43972 (or 43949 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 201212222201 its reverse (102222212102), we get a palindrome (303434434303).

The spelling of 201212222201 in words is "two hundred one billion, two hundred twelve million, two hundred twenty-two thousand, two hundred one".