220120320129 has 16 divisors (see below), whose sum is σ = 297647032320. Its totient is φ = 144670515920.

The previous prime is 220120320113. The next prime is 220120320131. The reversal of 220120320129 is 921023021022.

It is a cyclic number.

It is not a de Polignac number, because 220120320129 - 2⁴ = 220120320113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220120320099 and 220120320108.

It is not an unprimeable number, because it can be changed into a prime (220120320029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4882312 + ... + 4927190.

It is an arithmetic number, because the mean of its divisors is an integer number (18602939520).

Almost surely, 2^220120320129 is an apocalyptic number.

It is an amenable number.

220120320129 is a deficient number, since it is larger than the sum of its proper divisors (77526712191).

220120320129 is a wasteful number, since it uses less digits than its factorization.

220120320129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67980.

The product of its (nonzero) digits is 864, while the sum is 24.

The spelling of 220120320129 in words is "two hundred twenty billion, one hundred twenty million, three hundred twenty thousand, one hundred twenty-nine".