121335325405 has 32 divisors (see below), whose sum is σ = 173944995840. Its totient is φ = 79498186560.

The previous prime is 121335325387. The next prime is 121335325409. The reversal of 121335325405 is 504523533121.

It is not a de Polignac number, because 121335325405 - 2²¹ = 121333228253 is a prime.

It is a super-2 number, since 2×121335325405² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121335325409) 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, 622069 + ... + 793498.

It is an arithmetic number, because the mean of its divisors is an integer number (5435781120).

Almost surely, 2^121335325405 is an apocalyptic number.

It is an amenable number.

121335325405 is a deficient number, since it is larger than the sum of its proper divisors (52609670435).

121335325405 is a wasteful number, since it uses less digits than its factorization.

121335325405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415689.

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 121335325405 its reverse (504523533121), we get a palindrome (625858858526).

The spelling of 121335325405 in words is "one hundred twenty-one billion, three hundred thirty-five million, three hundred twenty-five thousand, four hundred five".