120211101021111 has 4 divisors (see below), whose sum is σ = 160281468028152. Its totient is φ = 80140734014072.

The previous prime is 120211101021043. The next prime is 120211101021203. The reversal of 120211101021111 is 111120101112021.

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 120211101021111 - 2¹⁷ = 120211100890039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120211101021311) 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, 20035183503516 + ... + 20035183503521.

It is an arithmetic number, because the mean of its divisors is an integer number (40070367007038).

Almost surely, 2^{120211101021111} is an apocalyptic number.

120211101021111 is a deficient number, since it is larger than the sum of its proper divisors (40070367007041).

120211101021111 is an equidigital number, since it uses as much as digits as its factorization.

120211101021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40070367007040.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 120211101021111 its reverse (111120101112021), we get a palindrome (231331202133132).

The spelling of 120211101021111 in words is "one hundred twenty trillion, two hundred eleven billion, one hundred one million, twenty-one thousand, one hundred eleven".