20120129201 has 8 divisors (see below), whose sum is σ = 20463408000. Its totient is φ = 19776925840.

The previous prime is 20120129189. The next prime is 20120129213. The reversal of 20120129201 is 10292102102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20120129189) and next prime (20120129213).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20120129201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120129231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 882536 + ... + 905046.

It is an arithmetic number, because the mean of its divisors is an integer number (2557926000).

Almost surely, 2^20120129201 is an apocalyptic number.

It is an amenable number.

20120129201 is a deficient number, since it is larger than the sum of its proper divisors (343278799).

20120129201 is a wasteful number, since it uses less digits than its factorization.

20120129201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37719.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 20120129201 in words is "twenty billion, one hundred twenty million, one hundred twenty-nine thousand, two hundred one".