13121229047 has 4 divisors (see below), whose sum is σ = 13122407760. Its totient is φ = 13120050336.

The previous prime is 13121229031. The next prime is 13121229049. The reversal of 13121229047 is 74092212131.

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 13121229047 - 2⁴ = 13121229031 is a prime.

It is a super-3 number, since 3×13121229047³ (a number of 31 digits) contains 333 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 (13121229049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 572498 + ... + 594975.

It is an arithmetic number, because the mean of its divisors is an integer number (3280601940).

Almost surely, 2^13121229047 is an apocalyptic number.

13121229047 is a deficient number, since it is larger than the sum of its proper divisors (1178713).

13121229047 is a wasteful number, since it uses less digits than its factorization.

13121229047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178712.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 13121229047 in words is "thirteen billion, one hundred twenty-one million, two hundred twenty-nine thousand, forty-seven".