21220003011 has 8 divisors (see below), whose sum is σ = 28295582400. Its totient is φ = 14145546152.

The previous prime is 21220002983. The next prime is 21220003027. The reversal of 21220003011 is 11030002212.

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 21220003011 - 2¹³ = 21219994819 is a prime.

It is a super-2 number, since 2×21220003011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21220004011) 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, 235485 + ... + 312878.

It is an arithmetic number, because the mean of its divisors is an integer number (3536947800).

Almost surely, 2^21220003011 is an apocalyptic number.

21220003011 is a deficient number, since it is larger than the sum of its proper divisors (7075579389).

21220003011 is a wasteful number, since it uses less digits than its factorization.

21220003011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561265.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21220003011 its reverse (11030002212), we get a palindrome (32250005223).

The spelling of 21220003011 in words is "twenty-one billion, two hundred twenty million, three thousand, eleven".