100200002120021 has 8 divisors (see below), whose sum is σ = 100369314601920. Its totient is φ = 100030776139008.

The previous prime is 100200002119999. The next prime is 100200002120047. The reversal of 100200002120021 is 120021200002001.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100200002120021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100200002119984 and 100200002120011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100200002120051) 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, 19306316 + ... + 23940213.

It is an arithmetic number, because the mean of its divisors is an integer number (12546164325240).

Almost surely, 2^{100200002120021} is an apocalyptic number.

It is an amenable number.

100200002120021 is a deficient number, since it is larger than the sum of its proper divisors (169312481899).

100200002120021 is an equidigital number, since it uses as much as digits as its factorization.

100200002120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43250443.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100200002120021 its reverse (120021200002001), we get a palindrome (220221202122022).

The spelling of 100200002120021 in words is "one hundred trillion, two hundred billion, two million, one hundred twenty thousand, twenty-one".