11000021231 has 8 divisors (see below), whose sum is σ = 11026914480. Its totient is φ = 10973155648.

The previous prime is 11000021209. The next prime is 11000021243. The reversal of 11000021231 is 13212000011.

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 11000021231 - 2⁶ = 11000021167 is a prime.

It is a super-2 number, since 2×11000021231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000021281) 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, 942725 + ... + 954321.

It is an arithmetic number, because the mean of its divisors is an integer number (1378364310).

Almost surely, 2^11000021231 is an apocalyptic number.

11000021231 is a deficient number, since it is larger than the sum of its proper divisors (26893249).

11000021231 is a wasteful number, since it uses less digits than its factorization.

11000021231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13833.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 11000021231 its reverse (13212000011), we get a palindrome (24212021242).

The spelling of 11000021231 in words is "eleven billion, twenty-one thousand, two hundred thirty-one".