112121010001221 has 16 divisors (see below), whose sum is σ = 161229987164736. Its totient is φ = 68896523304576.

The previous prime is 112121010001199. The next prime is 112121010001277. The reversal of 112121010001221 is 122100010121211.

It is a happy number.

It is not a de Polignac number, because 112121010001221 - 2⁷ = 112121010001093 is a prime.

It is a super-2 number, since 2×112121010001221² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 112121010001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112121010001321) 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, 2104583680 + ... + 2104636953.

It is an arithmetic number, because the mean of its divisors is an integer number (10076874197796).

Almost surely, 2^{112121010001221} is an apocalyptic number.

It is an amenable number.

112121010001221 is a deficient number, since it is larger than the sum of its proper divisors (49108977163515).

112121010001221 is a wasteful number, since it uses less digits than its factorization.

112121010001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4209221332.

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

Adding to 112121010001221 its reverse (122100010121211), we get a palindrome (234221020122432).

The spelling of 112121010001221 in words is "one hundred twelve trillion, one hundred twenty-one billion, ten million, one thousand, two hundred twenty-one".