21200000220101 has 8 divisors (see below), whose sum is σ = 21341674400064. Its totient is φ = 21058342840800.

The previous prime is 21200000220053. The next prime is 21200000220131. The reversal of 21200000220101 is 10102200000212.

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-21200000220101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200000220131) 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, 1662920 + ... + 6720513.

It is an arithmetic number, because the mean of its divisors is an integer number (2667709300008).

Almost surely, 2^{21200000220101} is an apocalyptic number.

It is an amenable number.

21200000220101 is a deficient number, since it is larger than the sum of its proper divisors (141674179963).

21200000220101 is a wasteful number, since it uses less digits than its factorization.

21200000220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8400331.

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

Adding to 21200000220101 its reverse (10102200000212), we get a palindrome (31302200220313).

The spelling of 21200000220101 in words is "twenty-one trillion, two hundred billion, two hundred twenty thousand, one hundred one".