121670349813 has 12 divisors (see below), whose sum is σ = 175990501440. Its totient is φ = 81000747816.

The previous prime is 121670349763. The next prime is 121670349841. The reversal of 121670349813 is 318943076121.

It is not a de Polignac number, because 121670349813 - 2²⁴ = 121653572597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121670349863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9394731 + ... + 9407672.

It is an arithmetic number, because the mean of its divisors is an integer number (14665875120).

Almost surely, 2^121670349813 is an apocalyptic number.

It is an amenable number.

121670349813 is a deficient number, since it is larger than the sum of its proper divisors (54320151627).

121670349813 is a wasteful number, since it uses less digits than its factorization.

121670349813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18803128 (or 18803125 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 121670349813 in words is "one hundred twenty-one billion, six hundred seventy million, three hundred forty-nine thousand, eight hundred thirteen".