121240331233021 has 32 divisors (see below), whose sum is σ = 163371889997568. Its totient is φ = 86891009955840.

The previous prime is 121240331233013. The next prime is 121240331233079. The reversal of 121240331233021 is 120332133042121.

It is a cyclic number.

It is not a de Polignac number, because 121240331233021 - 2³ = 121240331233013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121240331231021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218349460 + ... + 218904013.

It is an arithmetic number, because the mean of its divisors is an integer number (5105371562424).

Almost surely, 2^{121240331233021} is an apocalyptic number.

121240331233021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121240331233021 is a deficient number, since it is larger than the sum of its proper divisors (42131558764547).

121240331233021 is a wasteful number, since it uses less digits than its factorization.

121240331233021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437253781.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 121240331233021 its reverse (120332133042121), we get a palindrome (241572464275142).

The spelling of 121240331233021 in words is "one hundred twenty-one trillion, two hundred forty billion, three hundred thirty-one million, two hundred thirty-three thousand, twenty-one".