111210001221201 has 8 divisors (see below), whose sum is σ = 148815308494464. Its totient is φ = 73872347381040.

The previous prime is 111210001221169. The next prime is 111210001221229. The reversal of 111210001221201 is 102122100012111.

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 111210001221201 - 2⁵ = 111210001221169 is a prime.

It is a super-2 number, since 2×111210001221201² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111210001221301) 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, 66913357305 + ... + 66913358966.

It is an arithmetic number, because the mean of its divisors is an integer number (18601913561808).

Almost surely, 2^{111210001221201} is an apocalyptic number.

It is an amenable number.

111210001221201 is a deficient number, since it is larger than the sum of its proper divisors (37605307273263).

111210001221201 is a wasteful number, since it uses less digits than its factorization.

111210001221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133826716551.

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

Adding to 111210001221201 its reverse (102122100012111), we get a palindrome (213332101233312).

The spelling of 111210001221201 in words is "one hundred eleven trillion, two hundred ten billion, one million, two hundred twenty-one thousand, two hundred one".