1201121102111 has 16 divisors (see below), whose sum is σ = 1377646631424. Its totient is φ = 1025831061024.

The previous prime is 1201121102081. The next prime is 1201121102119. The reversal of 1201121102111 is 1112011211021.

It is not a de Polignac number, because 1201121102111 - 2⁶ = 1201121102047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201121102119) 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, 11810300 + ... + 11911566.

It is an arithmetic number, because the mean of its divisors is an integer number (86102914464).

Almost surely, 2^{1201121102111} is an apocalyptic number.

1201121102111 is a deficient number, since it is larger than the sum of its proper divisors (176525529313).

1201121102111 is a wasteful number, since it uses less digits than its factorization.

1201121102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107350.

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

Adding to 1201121102111 its reverse (1112011211021), we get a palindrome (2313132313132).

It can be divided in two parts, 12011211021 and 11, that multiplied together give a palindrome (132123321231).

The spelling of 1201121102111 in words is "one trillion, two hundred one billion, one hundred twenty-one million, one hundred two thousand, one hundred eleven".