1077072121 has 4 divisors (see below), whose sum is σ = 1077170512. Its totient is φ = 1076973732.

The previous prime is 1077072107. The next prime is 1077072137. The reversal of 1077072121 is 1212707701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1077072121 - 2¹⁹ = 1076547833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1077072121.

It is not an unprimeable number, because it can be changed into a prime (1077075121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30375 + ... + 55468.

It is an arithmetic number, because the mean of its divisors is an integer number (269292628).

Almost surely, 2^1077072121 is an apocalyptic number.

It is an amenable number.

1077072121 is a deficient number, since it is larger than the sum of its proper divisors (98391).

1077072121 is an equidigital number, since it uses as much as digits as its factorization.

1077072121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98390.

The product of its (nonzero) digits is 1372, while the sum is 28.

The square root of 1077072121 is about 32818.7769577113. The cubic root of 1077072121 is about 1025.0575802672.

Adding to 1077072121 its reverse (1212707701), we get a palindrome (2289779822).

The spelling of 1077072121 in words is "one billion, seventy-seven million, seventy-two thousand, one hundred twenty-one".