102121221230019 has 24 divisors (see below), whose sum is σ = 150663633010800. Its totient is φ = 66634644755520.

The previous prime is 102121221229861. The next prime is 102121221230023. The reversal of 102121221230019 is 910032122121201.

102121221230019 is a `hidden beast` number, since 1 + 0 + 2 + 121 + 221 + 2 + 300 + 19 = 666.

It is not a de Polignac number, because 102121221230019 - 2⁹ = 102121221229507 is a prime.

It is a super-2 number, since 2×102121221230019² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102121221229974 and 102121221230001.

It is not an unprimeable number, because it can be changed into a prime (102121221230059) 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, 419788192 + ... + 420031389.

It is an arithmetic number, because the mean of its divisors is an integer number (6277651375450).

Almost surely, 2^{102121221230019} is an apocalyptic number.

102121221230019 is a deficient number, since it is larger than the sum of its proper divisors (48542411780781).

102121221230019 is a wasteful number, since it uses less digits than its factorization.

102121221230019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839819875 (or 839819872 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The spelling of 102121221230019 in words is "one hundred two trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred thirty thousand, nineteen".