12121011210011 has 4 divisors (see below), whose sum is σ = 13222921320024. Its totient is φ = 11019101100000.

The previous prime is 12121011209971. The next prime is 12121011210043. The reversal of 12121011210011 is 11001211012121.

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 12121011210011 - 2²² = 12121007015707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121011210211) 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, 550955054990 + ... + 550955055011.

It is an arithmetic number, because the mean of its divisors is an integer number (3305730330006).

Almost surely, 2^{12121011210011} is an apocalyptic number.

12121011210011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12121011210011 is a deficient number, since it is larger than the sum of its proper divisors (1101910110013).

12121011210011 is a wasteful number, since it uses less digits than its factorization.

12121011210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101910110012.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12121011210011 its reverse (11001211012121), we get a palindrome (23122222222132).

The spelling of 12121011210011 in words is "twelve trillion, one hundred twenty-one billion, eleven million, two hundred ten thousand, eleven".