121040244019 has 16 divisors (see below), whose sum is σ = 123592896000. Its totient is φ = 118517214816.

The previous prime is 121040244007. The next prime is 121040244029. The reversal of 121040244019 is 910442040121.

It is a cyclic number.

It is not a de Polignac number, because 121040244019 - 2¹⁵ = 121040211251 is a prime.

It is a super-2 number, since 2×121040244019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121040244029) 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, 5715352 + ... + 5736490.

It is an arithmetic number, because the mean of its divisors is an integer number (7724556000).

Almost surely, 2^121040244019 is an apocalyptic number.

121040244019 is a deficient number, since it is larger than the sum of its proper divisors (2552651981).

121040244019 is a wasteful number, since it uses less digits than its factorization.

121040244019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21834.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 121040244019 in words is "one hundred twenty-one billion, forty million, two hundred forty-four thousand, nineteen".