200102020000021 has 8 divisors (see below), whose sum is σ = 210654893844000. Its totient is φ = 189551265014160.

The previous prime is 200102019999967. The next prime is 200102020000049. The reversal of 200102020000021 is 120000020201002.

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

It is a cyclic number.

It is not a de Polignac number, because 200102020000021 - 2¹⁹ = 200102019475733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200102019999962 and 200102020000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200102020000061) 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, 529520671 + ... + 529898428.

It is an arithmetic number, because the mean of its divisors is an integer number (26331861730500).

Almost surely, 2^{200102020000021} is an apocalyptic number.

It is an amenable number.

200102020000021 is a deficient number, since it is larger than the sum of its proper divisors (10552873843979).

200102020000021 is a wasteful number, since it uses less digits than its factorization.

200102020000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059429059.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 200102020000021 its reverse (120000020201002), we get a palindrome (320102040201023).

The spelling of 200102020000021 in words is "two hundred trillion, one hundred two billion, twenty million, twenty-one", and thus it is an aban number.