121345101 has 8 divisors (see below), whose sum is σ = 179770560. Its totient is φ = 80896716.

The previous prime is 121345069. The next prime is 121345109. The reversal of 121345101 is 101543121.

121345101 is a `hidden beast` number, since 1 + 213 + 451 + 0 + 1 = 666.

It is not a de Polignac number, because 121345101 - 2⁵ = 121345069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121345109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2247105 + ... + 2247158.

It is an arithmetic number, because the mean of its divisors is an integer number (22471320).

Almost surely, 2^121345101 is an apocalyptic number.

It is an amenable number.

121345101 is a deficient number, since it is larger than the sum of its proper divisors (58425459).

121345101 is an equidigital number, since it uses as much as digits as its factorization.

121345101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4494272 (or 4494266 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 121345101 is about 11015.6752403110. The cubic root of 121345101 is about 495.0785183067.

Adding to 121345101 its reverse (101543121), we get a palindrome (222888222).

The spelling of 121345101 in words is "one hundred twenty-one million, three hundred forty-five thousand, one hundred one".