21202000211009 has 8 divisors (see below), whose sum is σ = 21274802248128. Its totient is φ = 21129227843760.

The previous prime is 21202000210999. The next prime is 21202000211023. The reversal of 21202000211009 is 90011200020212.

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 not a de Polignac number, because 21202000211009 - 2³² = 21197705243713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21202000211039) 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, 5985347 + ... + 8844680.

It is an arithmetic number, because the mean of its divisors is an integer number (2659350281016).

Almost surely, 2^{21202000211009} is an apocalyptic number.

It is an amenable number.

21202000211009 is a deficient number, since it is larger than the sum of its proper divisors (72802037119).

21202000211009 is a wasteful number, since it uses less digits than its factorization.

21202000211009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14834935.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 21202000211009 in words is "twenty-one trillion, two hundred two billion, two hundred eleven thousand, nine".