121011000021219 has 128 divisors (see below), whose sum is σ = 209028833280000. Its totient is φ = 61718046902400.

The previous prime is 121011000021203. The next prime is 121011000021239. The reversal of 121011000021219 is 912120000110121.

It is not a de Polignac number, because 121011000021219 - 2⁴ = 121011000021203 is a prime.

It is a super-2 number, since 2×121011000021219² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 121011000021195 and 121011000021204.

It is not an unprimeable number, because it can be changed into a prime (121011000021239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 191757097 + ... + 192387125.

It is an arithmetic number, because the mean of its divisors is an integer number (1633037760000).

Almost surely, 2^{121011000021219} is an apocalyptic number.

121011000021219 is a deficient number, since it is larger than the sum of its proper divisors (88017833258781).

121011000021219 is a wasteful number, since it uses less digits than its factorization.

121011000021219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630374 (or 630360 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 121011000021219 in words is "one hundred twenty-one trillion, eleven billion, twenty-one thousand, two hundred nineteen".