121134213155 has 8 divisors (see below), whose sum is σ = 145380987600. Its totient is φ = 96894082656.

The previous prime is 121134213143. The next prime is 121134213181. The reversal of 121134213155 is 551312431121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121134213155 - 2⁴ = 121134213139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1620785 + ... + 1693874.

It is an arithmetic number, because the mean of its divisors is an integer number (18172623450).

Almost surely, 2^121134213155 is an apocalyptic number.

121134213155 is a deficient number, since it is larger than the sum of its proper divisors (24246774445).

121134213155 is an equidigital number, since it uses as much as digits as its factorization.

121134213155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3321973.

The product of its digits is 3600, while the sum is 29.

Adding to 121134213155 its reverse (551312431121), we get a palindrome (672446644276).

The spelling of 121134213155 in words is "one hundred twenty-one billion, one hundred thirty-four million, two hundred thirteen thousand, one hundred fifty-five".