121312013219 has 8 divisors (see below), whose sum is σ = 131816110080. Its totient is φ = 111219841800.

The previous prime is 121312013197. The next prime is 121312013239. The reversal of 121312013219 is 912310213121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121312013219 - 2¹² = 121312009123 is a prime.

It is a super-2 number, since 2×121312013219² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121312013239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102980747 + ... + 102981924.

It is an arithmetic number, because the mean of its divisors is an integer number (16477013760).

Almost surely, 2^121312013219 is an apocalyptic number.

121312013219 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

121312013219 is a deficient number, since it is larger than the sum of its proper divisors (10504096861).

121312013219 is a wasteful number, since it uses less digits than its factorization.

121312013219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205962721.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 121312013219 in words is "one hundred twenty-one billion, three hundred twelve million, thirteen thousand, two hundred nineteen".