12121011202011 has 4 divisors (see below), whose sum is σ = 16161348269352. Its totient is φ = 8080674134672.

The previous prime is 12121011202009. The next prime is 12121011202073. The reversal of 12121011202011 is 11020211012121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12121011202011 - 2¹ = 12121011202009 is a prime.

It is a super-2 number, since 2×12121011202011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12121011202211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2020168533666 + ... + 2020168533671.

It is an arithmetic number, because the mean of its divisors is an integer number (4040337067338).

Almost surely, 2^{12121011202011} is an apocalyptic number.

12121011202011 is a deficient number, since it is larger than the sum of its proper divisors (4040337067341).

12121011202011 is an equidigital number, since it uses as much as digits as its factorization.

12121011202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040337067340.

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

Adding to 12121011202011 its reverse (11020211012121), we get a palindrome (23141222214132).

The spelling of 12121011202011 in words is "twelve trillion, one hundred twenty-one billion, eleven million, two hundred two thousand, eleven".