121213395 has 16 divisors (see below), whose sum is σ = 215490720. Its totient is φ = 64647072.

The previous prime is 121213333. The next prime is 121213397. The reversal of 121213395 is 593312121.

It is not a de Polignac number, because 121213395 - 2¹¹ = 121211347 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (121213397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 448804 + ... + 449073.

It is an arithmetic number, because the mean of its divisors is an integer number (13468170).

Almost surely, 2^121213395 is an apocalyptic number.

121213395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121213395 is a deficient number, since it is larger than the sum of its proper divisors (94277325).

121213395 is an equidigital number, since it uses as much as digits as its factorization.

121213395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897891 (or 897885 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 121213395 is about 11009.6954998765. The cubic root of 121213395 is about 494.8993367389.

The spelling of 121213395 in words is "one hundred twenty-one million, two hundred thirteen thousand, three hundred ninety-five".