21320122011 has 8 divisors (see below), whose sum is σ = 28615087104. Its totient is φ = 14119285800.

The previous prime is 21320122003. The next prime is 21320122049. The reversal of 21320122011 is 11022102312.

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

It is not a de Polignac number, because 21320122011 - 2³ = 21320122003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21320122051) 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, 23531691 + ... + 23532596.

It is an arithmetic number, because the mean of its divisors is an integer number (3576885888).

Almost surely, 2^21320122011 is an apocalyptic number.

21320122011 is a deficient number, since it is larger than the sum of its proper divisors (7294965093).

21320122011 is a wasteful number, since it uses less digits than its factorization.

21320122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47064441.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21320122011 its reverse (11022102312), we get a palindrome (32342224323).

The spelling of 21320122011 in words is "twenty-one billion, three hundred twenty million, one hundred twenty-two thousand, eleven".