12021054151777 has 16 divisors (see below), whose sum is σ = 13191403987008. Its totient is φ = 10863641954880.

The previous prime is 12021054151759. The next prime is 12021054151783. The reversal of 12021054151777 is 77715145012021.

It is not a de Polignac number, because 12021054151777 - 2⁷ = 12021054151649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021054151277) 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, 14287903 + ... + 15105835.

It is an arithmetic number, because the mean of its divisors is an integer number (824462749188).

Almost surely, 2^{12021054151777} is an apocalyptic number.

It is an amenable number.

12021054151777 is a deficient number, since it is larger than the sum of its proper divisors (1170349835231).

12021054151777 is a wasteful number, since it uses less digits than its factorization.

12021054151777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825840.

The product of its (nonzero) digits is 137200, while the sum is 43.

Adding to 12021054151777 its reverse (77715145012021), we get a palindrome (89736199163798).

The spelling of 12021054151777 in words is "twelve trillion, twenty-one billion, fifty-four million, one hundred fifty-one thousand, seven hundred seventy-seven".