121545012311 has 8 divisors (see below), whose sum is σ = 123060403200. Its totient is φ = 120038778360.

The previous prime is 121545012269. The next prime is 121545012317. The reversal of 121545012311 is 113210545121.

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 121545012311 - 2¹⁴ = 121544995927 is a prime.

It is a super-2 number, since 2×121545012311² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121545012317) 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 7 ways as a sum of consecutive naturals, for example, 2262521 + ... + 2315618.

It is an arithmetic number, because the mean of its divisors is an integer number (15382550400).

Almost surely, 2^121545012311 is an apocalyptic number.

121545012311 is a deficient number, since it is larger than the sum of its proper divisors (1515390889).

121545012311 is a wasteful number, since it uses less digits than its factorization.

121545012311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4578469.

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 121545012311 its reverse (113210545121), we get a palindrome (234755557432).

The spelling of 121545012311 in words is "one hundred twenty-one billion, five hundred forty-five million, twelve thousand, three hundred eleven".