21022201011 has 8 divisors (see below), whose sum is σ = 32033830144. Its totient is φ = 12012686280.

The previous prime is 21022200973. The next prime is 21022201033. The reversal of 21022201011 is 11010222012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21022201011 - 2⁷ = 21022200883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022201111) 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, 500528575 + ... + 500528616.

It is an arithmetic number, because the mean of its divisors is an integer number (4004228768).

Almost surely, 2^21022201011 is an apocalyptic number.

21022201011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21022201011 is a deficient number, since it is larger than the sum of its proper divisors (11011629133).

21022201011 is a wasteful number, since it uses less digits than its factorization.

21022201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001057201.

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

Adding to 21022201011 its reverse (11010222012), we get a palindrome (32032423023).

The spelling of 21022201011 in words is "twenty-one billion, twenty-two million, two hundred one thousand, eleven".