12021311210011 has 32 divisors (see below), whose sum is σ = 13194443243520. Its totient is φ = 10921947120000.

The previous prime is 12021311209913. The next prime is 12021311210023. The reversal of 12021311210011 is 11001211312021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12021311210011 - 2¹¹ = 12021311207963 is a prime.

It is a super-2 number, since 2×12021311210011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021311220011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7923261 + ... + 9317761.

It is an arithmetic number, because the mean of its divisors is an integer number (412326351360).

Almost surely, 2^{12021311210011} is an apocalyptic number.

12021311210011 is a deficient number, since it is larger than the sum of its proper divisors (1173132033509).

12021311210011 is a wasteful number, since it uses less digits than its factorization.

12021311210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394827.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 12021311210011 its reverse (11001211312021), we get a palindrome (23022522522032).

It can be divided in two parts, 1202131 and 1210011, that added together give a palindrome (2412142).

The spelling of 12021311210011 in words is "twelve trillion, twenty-one billion, three hundred eleven million, two hundred ten thousand, eleven".