213603121106135 has 4 divisors (see below), whose sum is σ = 256323745327368. Its totient is φ = 170882496884904.

The previous prime is 213603121106101. The next prime is 213603121106153. The reversal of 213603121106135 is 531601121306312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213603121106135 - 2¹⁶ = 213603121040599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213603121106095 and 213603121106104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21360312110609 + ... + 21360312110618.

It is an arithmetic number, because the mean of its divisors is an integer number (64080936331842).

Almost surely, 2^{213603121106135} is an apocalyptic number.

213603121106135 is a deficient number, since it is larger than the sum of its proper divisors (42720624221233).

213603121106135 is an equidigital number, since it uses as much as digits as its factorization.

213603121106135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42720624221232.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 213603121106135 in words is "two hundred thirteen trillion, six hundred three billion, one hundred twenty-one million, one hundred six thousand, one hundred thirty-five".