1212211210011 has 8 divisors (see below), whose sum is σ = 1617412676880. Its totient is φ = 807575274912.

The previous prime is 1212211209961. The next prime is 1212211210079. The reversal of 1212211210011 is 1100121122121.

It is a happy number.

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

It is not a de Polignac number, because 1212211210011 - 2⁹ = 1212211209499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212211260011) 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, 141377940 + ... + 141386513.

It is an arithmetic number, because the mean of its divisors is an integer number (202176584610).

Almost surely, 2^{1212211210011} is an apocalyptic number.

1212211210011 is a deficient number, since it is larger than the sum of its proper divisors (405201466869).

1212211210011 is a wasteful number, since it uses less digits than its factorization.

1212211210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282765885.

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

Adding to 1212211210011 its reverse (1100121122121), we get a palindrome (2312332332132).

The spelling of 1212211210011 in words is "one trillion, two hundred twelve billion, two hundred eleven million, two hundred ten thousand, eleven".