21024222311 has 8 divisors (see below), whose sum is σ = 21097784448. Its totient is φ = 20950699000.

The previous prime is 21024222301. The next prime is 21024222319. The reversal of 21024222311 is 11322242012.

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 21024222311 - 2³⁴ = 3844353127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21024222319) 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, 1451696 + ... + 1466106.

It is an arithmetic number, because the mean of its divisors is an integer number (2637223056).

Almost surely, 2^21024222311 is an apocalyptic number.

21024222311 is a deficient number, since it is larger than the sum of its proper divisors (73562137).

21024222311 is a wasteful number, since it uses less digits than its factorization.

21024222311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19413.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21024222311 its reverse (11322242012), we get a palindrome (32346464323).

The spelling of 21024222311 in words is "twenty-one billion, twenty-four million, two hundred twenty-two thousand, three hundred eleven".