201212143209 has 96 divisors (see below), whose sum is σ = 371975804928. Its totient is φ = 101761632000.

The previous prime is 201212143201. The next prime is 201212143213. The reversal of 201212143209 is 902341212102.

201212143209 is a `hidden beast` number, since 2 + 0 + 121 + 214 + 320 + 9 = 666.

It is not a de Polignac number, because 201212143209 - 2³ = 201212143201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201212143201) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13943572 + ... + 13957994.

It is an arithmetic number, because the mean of its divisors is an integer number (3874747968).

Almost surely, 2^201212143209 is an apocalyptic number.

It is an amenable number.

201212143209 is a deficient number, since it is larger than the sum of its proper divisors (170763661719).

201212143209 is a wasteful number, since it uses less digits than its factorization.

201212143209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14979 (or 14976 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 201212143209 in words is "two hundred one billion, two hundred twelve million, one hundred forty-three thousand, two hundred nine".