201217421276 has 24 divisors (see below), whose sum is σ = 353813474784. Its totient is φ = 100128602880.

The previous prime is 201217421269. The next prime is 201217421281. The reversal of 201217421276 is 672124712102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 994136 + ... + 1179296.

It is an arithmetic number, because the mean of its divisors is an integer number (14742228116).

Almost surely, 2^201217421276 is an apocalyptic number.

It is an amenable number.

201217421276 is a deficient number, since it is larger than the sum of its proper divisors (152596053508).

201217421276 is a wasteful number, since it uses less digits than its factorization.

201217421276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186461 (or 186459 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The spelling of 201217421276 in words is "two hundred one billion, two hundred seventeen million, four hundred twenty-one thousand, two hundred seventy-six".