111212001201 has 32 divisors (see below), whose sum is σ = 172681400320. Its totient is φ = 62355230784.

The previous prime is 111212001181. The next prime is 111212001203. The reversal of 111212001201 is 102100212111.

It is not a de Polignac number, because 111212001201 - 2⁶ = 111212001137 is a prime.

It is a super-2 number, since 2×111212001201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111212001203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85 + ... + 471618.

It is an arithmetic number, because the mean of its divisors is an integer number (5396293760).

Almost surely, 2^111212001201 is an apocalyptic number.

It is an amenable number.

111212001201 is a deficient number, since it is larger than the sum of its proper divisors (61469399119).

111212001201 is a wasteful number, since it uses less digits than its factorization.

111212001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471925.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111212001201 its reverse (102100212111), we get a palindrome (213312213312).

The spelling of 111212001201 in words is "one hundred eleven billion, two hundred twelve million, one thousand, two hundred one".