1201122120111 has 8 divisors (see below), whose sum is σ = 1644779840304. Its totient is φ = 779106240000.

The previous prime is 1201122120097. The next prime is 1201122120157. The reversal of 1201122120111 is 1110212211021.

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 1201122120111 - 2³³ = 1192532185519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201122120161) 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, 5410459890 + ... + 5410460111.

It is an arithmetic number, because the mean of its divisors is an integer number (205597480038).

Almost surely, 2^{1201122120111} is an apocalyptic number.

1201122120111 is a deficient number, since it is larger than the sum of its proper divisors (443657720193).

1201122120111 is a wasteful number, since it uses less digits than its factorization.

1201122120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10820920041.

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

Adding to 1201122120111 its reverse (1110212211021), we get a palindrome (2311334331132).

The spelling of 1201122120111 in words is "one trillion, two hundred one billion, one hundred twenty-two million, one hundred twenty thousand, one hundred eleven".