21222210021011 has 8 divisors (see below), whose sum is σ = 21297421790064. Its totient is φ = 21146999813280.

The previous prime is 21222210020941. The next prime is 21222210021031. The reversal of 21222210021011 is 11012001222212.

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-21222210021011 is a prime.

It is a super-2 number, since 2×21222210021011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222210021031) 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, 31429001 + ... + 32097141.

It is an arithmetic number, because the mean of its divisors is an integer number (2662177723758).

Almost surely, 2^{21222210021011} is an apocalyptic number.

21222210021011 is a deficient number, since it is larger than the sum of its proper divisors (75211769053).

21222210021011 is a wasteful number, since it uses less digits than its factorization.

21222210021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780661.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21222210021011 its reverse (11012001222212), we get a palindrome (32234211243223).

The spelling of 21222210021011 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred ten million, twenty-one thousand, eleven".