21220020002211 has 16 divisors (see below), whose sum is σ = 28349344932000. Its totient is φ = 14118715054080.

The previous prime is 21220020002101. The next prime is 21220020002239. The reversal of 21220020002211 is 11220002002212.

It is not a de Polignac number, because 21220020002211 - 2¹⁵ = 21220019969443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21220020002411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353086 + ... + 6524163.

It is an arithmetic number, because the mean of its divisors is an integer number (1771834058250).

Almost surely, 2^{21220020002211} is an apocalyptic number.

21220020002211 is a deficient number, since it is larger than the sum of its proper divisors (7129324929789).

21220020002211 is a wasteful number, since it uses less digits than its factorization.

21220020002211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6879286.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21220020002211 its reverse (11220002002212), we get a palindrome (32440022004423).

The spelling of 21220020002211 in words is "twenty-one trillion, two hundred twenty billion, twenty million, two thousand, two hundred eleven".