121230404310145 has 32 divisors (see below), whose sum is σ = 157418312163840. Its totient is φ = 89094708138240.

The previous prime is 121230404310107. The next prime is 121230404310167. The reversal of 121230404310145 is 541013404032121.

It is a happy number.

It is not a de Polignac number, because 121230404310145 - 2⁷ = 121230404310017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 253721976 + ... + 254199334.

It is an arithmetic number, because the mean of its divisors is an integer number (4919322255120).

Almost surely, 2^{121230404310145} is an apocalyptic number.

It is an amenable number.

121230404310145 is a deficient number, since it is larger than the sum of its proper divisors (36187907853695).

121230404310145 is a wasteful number, since it uses less digits than its factorization.

121230404310145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496105.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 121230404310145 its reverse (541013404032121), we get a palindrome (662243808342266).

The spelling of 121230404310145 in words is "one hundred twenty-one trillion, two hundred thirty billion, four hundred four million, three hundred ten thousand, one hundred forty-five".