120220040521511 has 16 divisors (see below), whose sum is σ = 138182039424000. Its totient is φ = 102455136315168.

The previous prime is 120220040521429. The next prime is 120220040521591. The reversal of 120220040521511 is 115125040022021.

It is a happy number.

It is not a de Polignac number, because 120220040521511 - 2²⁶ = 120219973412647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120220040521591) 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, 1609265 + ... + 15589413.

It is an arithmetic number, because the mean of its divisors is an integer number (8636377464000).

Almost surely, 2^{120220040521511} is an apocalyptic number.

120220040521511 is a deficient number, since it is larger than the sum of its proper divisors (17961998902489).

120220040521511 is a wasteful number, since it uses less digits than its factorization.

120220040521511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13987198.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 120220040521511 its reverse (115125040022021), we get a palindrome (235345080543532).

The spelling of 120220040521511 in words is "one hundred twenty trillion, two hundred twenty billion, forty million, five hundred twenty-one thousand, five hundred eleven".