121356341211 has 32 divisors (see below), whose sum is σ = 192421951488. Its totient is φ = 66590409600.

The previous prime is 121356341177. The next prime is 121356341213. The reversal of 121356341211 is 112143653121.

It is not a de Polignac number, because 121356341211 - 2¹³ = 121356333019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121356341213) 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, 1107640 + ... + 1212261.

It is an arithmetic number, because the mean of its divisors is an integer number (6013185984).

Almost surely, 2^121356341211 is an apocalyptic number.

121356341211 is a deficient number, since it is larger than the sum of its proper divisors (71065610277).

121356341211 is a wasteful number, since it uses less digits than its factorization.

121356341211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320011.

The product of its digits is 4320, while the sum is 30.

Adding to 121356341211 its reverse (112143653121), we get a palindrome (233499994332).

The spelling of 121356341211 in words is "one hundred twenty-one billion, three hundred fifty-six million, three hundred forty-one thousand, two hundred eleven".