121554033411 has 12 divisors (see below), whose sum is σ = 163246496712. Its totient is φ = 80452990944.

The previous prime is 121554033407. The next prime is 121554033427. The reversal of 121554033411 is 114330455121.

It is not a de Polignac number, because 121554033411 - 2² = 121554033407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121554033401) 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 11 ways as a sum of consecutive naturals, for example, 990586 + ... + 1106511.

It is an arithmetic number, because the mean of its divisors is an integer number (13603874726).

Almost surely, 2^121554033411 is an apocalyptic number.

121554033411 is a deficient number, since it is larger than the sum of its proper divisors (41692463301).

121554033411 is an equidigital number, since it uses as much as digits as its factorization.

121554033411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097378 (or 2097239 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 121554033411 its reverse (114330455121), we get a palindrome (235884488532).

The spelling of 121554033411 in words is "one hundred twenty-one billion, five hundred fifty-four million, thirty-three thousand, four hundred eleven".