201212323401 has 16 divisors (see below), whose sum is σ = 279985112064. Its totient is φ = 128292105744.

The previous prime is 201212323373. The next prime is 201212323423. The reversal of 201212323401 is 104323212102.

It is not a de Polignac number, because 201212323401 - 2¹¹ = 201212321353 is a prime.

It is a super-2 number, since 2×201212323401² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201252323401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333210 + ... + 716556.

It is an arithmetic number, because the mean of its divisors is an integer number (17499069504).

Almost surely, 2^201212323401 is an apocalyptic number.

It is an amenable number.

201212323401 is a deficient number, since it is larger than the sum of its proper divisors (78772788663).

201212323401 is a wasteful number, since it uses less digits than its factorization.

201212323401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390980.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 201212323401 its reverse (104323212102), we get a palindrome (305535535503).

The spelling of 201212323401 in words is "two hundred one billion, two hundred twelve million, three hundred twenty-three thousand, four hundred one".