121223100019 has 8 divisors (see below), whose sum is σ = 138551420000. Its totient is φ = 103897463616.

The previous prime is 121223100001. The next prime is 121223100029. The reversal of 121223100019 is 910001322121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121223100019 is a prime.

It is a super-2 number, since 2×121223100019² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121223100029) 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, 573144 + ... + 755605.

It is an arithmetic number, because the mean of its divisors is an integer number (17318927500).

Almost surely, 2^121223100019 is an apocalyptic number.

121223100019 is a deficient number, since it is larger than the sum of its proper divisors (17328319981).

121223100019 is a wasteful number, since it uses less digits than its factorization.

121223100019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341789.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 121223100019 in words is "one hundred twenty-one billion, two hundred twenty-three million, one hundred thousand, nineteen".