20110200001221 has 8 divisors (see below), whose sum is σ = 29251200001824. Its totient is φ = 12188000000720.

The previous prime is 20110200001217. The next prime is 20110200001337. The reversal of 20110200001221 is 12210000201102.

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 20110200001221 - 2² = 20110200001217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20110200001197 and 20110200001206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110200001721) 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, 304699999986 + ... + 304700000051.

It is an arithmetic number, because the mean of its divisors is an integer number (3656400000228).

Almost surely, 2^{20110200001221} is an apocalyptic number.

It is an amenable number.

20110200001221 is a deficient number, since it is larger than the sum of its proper divisors (9141000000603).

20110200001221 is a wasteful number, since it uses less digits than its factorization.

20110200001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609400000051.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20110200001221 its reverse (12210000201102), we get a palindrome (32320200202323).

The spelling of 20110200001221 in words is "twenty trillion, one hundred ten billion, two hundred million, one thousand, two hundred twenty-one".