1201210111101 has 32 divisors (see below), whose sum is σ = 2150418106368. Its totient is φ = 576004847040.

The previous prime is 1201210111063. The next prime is 1201210111103. The reversal of 1201210111101 is 1011110121021.

It is not a de Polignac number, because 1201210111101 - 2¹⁵ = 1201210078333 is a prime.

It is a super-2 number, since 2×1201210111101² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201210111103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199998681 + ... + 200004686.

It is an arithmetic number, because the mean of its divisors is an integer number (67200565824).

Almost surely, 2^{1201210111101} is an apocalyptic number.

1201210111101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201210111101 is a deficient number, since it is larger than the sum of its proper divisors (949207995267).

1201210111101 is a wasteful number, since it uses less digits than its factorization.

1201210111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400003401.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1201210111101 its reverse (1011110121021), we get a palindrome (2212320232122).

The spelling of 1201210111101 in words is "one trillion, two hundred one billion, two hundred ten million, one hundred eleven thousand, one hundred one".