121056785043 has 16 divisors (see below), whose sum is σ = 161909459712. Its totient is φ = 80454644000.

The previous prime is 121056785023. The next prime is 121056785081. The reversal of 121056785043 is 340587650121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121056785043 - 2¹³ = 121056776851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121056784986 and 121056785004.

It is not an unprimeable number, because it can be changed into a prime (121056785023) 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, 1468738 + ... + 1548968.

It is an arithmetic number, because the mean of its divisors is an integer number (10119341232).

Almost surely, 2^121056785043 is an apocalyptic number.

121056785043 is a deficient number, since it is larger than the sum of its proper divisors (40852674669).

121056785043 is a wasteful number, since it uses less digits than its factorization.

121056785043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81786.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 121056785043 in words is "one hundred twenty-one billion, fifty-six million, seven hundred eighty-five thousand, forty-three".