2011000021231 has 16 divisors (see below), whose sum is σ = 2078604721728. Its totient is φ = 1944515372800.

The previous prime is 2011000021207. The next prime is 2011000021267. The reversal of 2011000021231 is 1321200001102.

It is a cyclic number.

It is not a de Polignac number, because 2011000021231 - 2⁷ = 2011000021103 is a prime.

It is a super-2 number, since 2×2011000021231² (a number of 25 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 (2011000021271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9760875 + ... + 9964771.

It is an arithmetic number, because the mean of its divisors is an integer number (129912795108).

Almost surely, 2^{2011000021231} is an apocalyptic number.

2011000021231 is a deficient number, since it is larger than the sum of its proper divisors (67604700497).

2011000021231 is a wasteful number, since it uses less digits than its factorization.

2011000021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206642.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 2011000021231 its reverse (1321200001102), we get a palindrome (3332200022333).

The spelling of 2011000021231 in words is "two trillion, eleven billion, twenty-one thousand, two hundred thirty-one".