10121220120111 has 16 divisors (see below), whose sum is σ = 13614568348416. Its totient is φ = 6687677598336.

The previous prime is 10121220120107. The next prime is 10121220120139. The reversal of 10121220120111 is 11102102212101.

It is a happy number.

It is not a de Polignac number, because 10121220120111 - 2² = 10121220120107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121220120311) 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, 33016206 + ... + 33321348.

It is an arithmetic number, because the mean of its divisors is an integer number (850910521776).

Almost surely, 2^{10121220120111} is an apocalyptic number.

10121220120111 is a deficient number, since it is larger than the sum of its proper divisors (3493348228305).

10121220120111 is a wasteful number, since it uses less digits than its factorization.

10121220120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403102.

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

Adding to 10121220120111 its reverse (11102102212101), we get a palindrome (21223322332212).

The spelling of 10121220120111 in words is "ten trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twenty thousand, one hundred eleven".