200002111121021 has 16 divisors (see below), whose sum is σ = 218236328751168. Its totient is φ = 181776599385600.

The previous prime is 200002111120967. The next prime is 200002111121023. The reversal of 200002111121021 is 120121111200002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200002111121021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200002111120987 and 200002111121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200002111121023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 943865741 + ... + 944077613.

It is an arithmetic number, because the mean of its divisors is an integer number (13639770546948).

Almost surely, 2^{200002111121021} is an apocalyptic number.

It is an amenable number.

200002111121021 is a deficient number, since it is larger than the sum of its proper divisors (18234217630147).

200002111121021 is a wasteful number, since it uses less digits than its factorization.

200002111121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232012.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 200002111121021 its reverse (120121111200002), we get a palindrome (320123222321023).

The spelling of 200002111121021 in words is "two hundred trillion, two billion, one hundred eleven million, one hundred twenty-one thousand, twenty-one".