12211020121011 has 16 divisors (see below), whose sum is σ = 16662776064000. Its totient is φ = 7951729807008.

The previous prime is 12211020121007. The next prime is 12211020121049. The reversal of 12211020121011 is 11012102011221.

It is a happy number.

It is not a de Polignac number, because 12211020121011 - 2² = 12211020121007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12211020120011) 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, 219681811 + ... + 219737388.

It is an arithmetic number, because the mean of its divisors is an integer number (1041423504000).

Almost surely, 2^{12211020121011} is an apocalyptic number.

12211020121011 is a deficient number, since it is larger than the sum of its proper divisors (4451755942989).

12211020121011 is a wasteful number, since it uses less digits than its factorization.

12211020121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439419418.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12211020121011 its reverse (11012102011221), we get a palindrome (23223122132232).

The spelling of 12211020121011 in words is "twelve trillion, two hundred eleven billion, twenty million, one hundred twenty-one thousand, eleven".