1128446212421 has 4 divisors (see below), whose sum is σ = 1231032231744. Its totient is φ = 1025860193100.

The previous prime is 1128446212381. The next prime is 1128446212427. The reversal of 1128446212421 is 1242126448211.

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.

It is a cyclic number.

It is not a de Polignac number, because 1128446212421 - 2²⁶ = 1128379103557 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 (1128446212427) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 51293009645 + ... + 51293009666.

It is an arithmetic number, because the mean of its divisors is an integer number (307758057936).

Almost surely, 2^{1128446212421} is an apocalyptic number.

1128446212421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1128446212421 is a deficient number, since it is larger than the sum of its proper divisors (102586019323).

1128446212421 is a wasteful number, since it uses less digits than its factorization.

1128446212421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102586019322.

The product of its digits is 49152, while the sum is 38.

The spelling of 1128446212421 in words is "one trillion, one hundred twenty-eight billion, four hundred forty-six million, two hundred twelve thousand, four hundred twenty-one".