12010021311 has 8 divisors (see below), whose sum is σ = 16019723824. Its totient is φ = 8003499840.

The previous prime is 12010021301. The next prime is 12010021313. The reversal of 12010021311 is 11312001021.

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

It is not a de Polignac number, because 12010021311 - 2⁵ = 12010021279 is a prime.

It is a super-4 number, since 4×12010021311⁴ (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010021313) 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, 786436 + ... + 801561.

It is an arithmetic number, because the mean of its divisors is an integer number (2002465478).

Almost surely, 2^12010021311 is an apocalyptic number.

12010021311 is a deficient number, since it is larger than the sum of its proper divisors (4009702513).

12010021311 is a wasteful number, since it uses less digits than its factorization.

12010021311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590521.

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

Adding to 12010021311 its reverse (11312001021), we get a palindrome (23322022332).

The spelling of 12010021311 in words is "twelve billion, ten million, twenty-one thousand, three hundred eleven".