20151201230 has 8 divisors (see below), whose sum is σ = 36272162232. Its totient is φ = 8060480488.

The previous prime is 20151201229. The next prime is 20151201247. The reversal of 20151201230 is 3210215102.

It is a happy number.

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

It is a super-2 number, since 2×20151201230² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20151201199 and 20151201208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1007560052 + ... + 1007560071.

It is an arithmetic number, because the mean of its divisors is an integer number (4534020279).

Almost surely, 2^20151201230 is an apocalyptic number.

20151201230 is a deficient number, since it is larger than the sum of its proper divisors (16120961002).

20151201230 is a wasteful number, since it uses less digits than its factorization.

20151201230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015120130.

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 20151201230 its reverse (3210215102), we get a palindrome (23361416332).

The spelling of 20151201230 in words is "twenty billion, one hundred fifty-one million, two hundred one thousand, two hundred thirty".