20121220130 has 16 divisors (see below), whose sum is σ = 39510759744. Its totient is φ = 7316807280.

The previous prime is 20121220117. The next prime is 20121220151. The reversal of 20121220130 is 3102212102.

It is a happy 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, 91459982 + ... + 91460201.

It is an arithmetic number, because the mean of its divisors is an integer number (2469422484).

Almost surely, 2^20121220130 is an apocalyptic number.

20121220130 is a deficient number, since it is larger than the sum of its proper divisors (19389539614).

20121220130 is a wasteful number, since it uses less digits than its factorization.

20121220130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182920201.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20121220130 its reverse (3102212102), we get a palindrome (23223432232).

The spelling of 20121220130 in words is "twenty billion, one hundred twenty-one million, two hundred twenty thousand, one hundred thirty".