21220002001111 has 8 divisors (see below), whose sum is σ = 22168569316320. Its totient is φ = 20273597896992.

The previous prime is 21220002001103. The next prime is 21220002001141. The reversal of 21220002001111 is 11110020002212.

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 21220002001111 - 2³ = 21220002001103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21220002001091 and 21220002001100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220002001141) 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, 540782716 + ... + 540821953.

It is an arithmetic number, because the mean of its divisors is an integer number (2771071164540).

Almost surely, 2^{21220002001111} is an apocalyptic number.

21220002001111 is a deficient number, since it is larger than the sum of its proper divisors (948567315209).

21220002001111 is a wasteful number, since it uses less digits than its factorization.

21220002001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081605545.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21220002001111 its reverse (11110020002212), we get a palindrome (32330022003323).

The spelling of 21220002001111 in words is "twenty-one trillion, two hundred twenty billion, two million, one thousand, one hundred eleven".