111212210001201 has 16 divisors (see below), whose sum is σ = 158059200960000. Its totient is φ = 69311886633728.

The previous prime is 111212210001127. The next prime is 111212210001241. The reversal of 111212210001201 is 102100012212111.

It is a happy number.

It is not a de Polignac number, because 111212210001201 - 2¹³ = 111212209993009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111212210001241) 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, 7317548001 + ... + 7317563198.

It is an arithmetic number, because the mean of its divisors is an integer number (9878700060000).

Almost surely, 2^{111212210001201} is an apocalyptic number.

It is an amenable number.

111212210001201 is a deficient number, since it is larger than the sum of its proper divisors (46846990958799).

111212210001201 is a wasteful number, since it uses less digits than its factorization.

111212210001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14635111368.

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

Adding to 111212210001201 its reverse (102100012212111), we get a palindrome (213312222213312).

The spelling of 111212210001201 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred ten million, one thousand, two hundred one".