121314021309 has 24 divisors (see below), whose sum is σ = 189428279040. Its totient is φ = 74370904992.

The previous prime is 121314021307. The next prime is 121314021319. The reversal of 121314021309 is 903120413121.

121314021309 is a `hidden beast` number, since 1 + 21 + 314 + 0 + 21 + 309 = 666.

It is not a de Polignac number, because 121314021309 - 2¹ = 121314021307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121314021307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1940469 + ... + 2002010.

It is an arithmetic number, because the mean of its divisors is an integer number (7892844960).

Almost surely, 2^121314021309 is an apocalyptic number.

It is an amenable number.

121314021309 is a deficient number, since it is larger than the sum of its proper divisors (68114257731).

121314021309 is a wasteful number, since it uses less digits than its factorization.

121314021309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3942761 (or 3942758 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 121314021309 in words is "one hundred twenty-one billion, three hundred fourteen million, twenty-one thousand, three hundred nine".