4020555123122 has 4 divisors (see below), whose sum is σ = 6030832684686. Its totient is φ = 2010277561560.

The previous prime is 4020555123107. The next prime is 4020555123217. The reversal of 4020555123122 is 2213215550204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3036790684321 + 983764438801 = 1742639^2 + 991849^2 .

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 as a sum of consecutive naturals, namely, 1005138780779 + ... + 1005138780782.

Almost surely, 2^{4020555123122} is an apocalyptic number.

4020555123122 is a deficient number, since it is larger than the sum of its proper divisors (2010277561564).

4020555123122 is a wasteful number, since it uses less digits than its factorization.

4020555123122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010277561563.

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 4020555123122 in words is "four trillion, twenty billion, five hundred fifty-five million, one hundred twenty-three thousand, one hundred twenty-two".