200121020019 has 24 divisors (see below), whose sum is σ = 306304822512. Its totient is φ = 125468743680.

The previous prime is 200121020009. The next prime is 200121020023. The reversal of 200121020019 is 910020121002.

200121020019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 200121020019 - 2⁹ = 200121019507 is a prime.

It is a super-2 number, since 2×200121020019² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 200121019983 and 200121020010.

It is not an unprimeable number, because it can be changed into a prime (200121020009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 309054 + ... + 704099.

It is an arithmetic number, because the mean of its divisors is an integer number (12762700938).

Almost surely, 2^200121020019 is an apocalyptic number.

200121020019 is a deficient number, since it is larger than the sum of its proper divisors (106183802493).

200121020019 is a wasteful number, since it uses less digits than its factorization.

200121020019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014467 (or 1014464 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 200121020019 in words is "two hundred billion, one hundred twenty-one million, twenty thousand, nineteen".