221200011101121 has 32 divisors (see below), whose sum is σ = 319924948224000. Its totient is φ = 135135594070848.

The previous prime is 221200011101117. The next prime is 221200011101141. The reversal of 221200011101121 is 121101110002122.

It is a happy number.

It is not a de Polignac number, because 221200011101121 - 2² = 221200011101117 is a prime.

It is a super-2 number, since 2×221200011101121² (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 221200011101121.

It is not an unprimeable number, because it can be changed into a prime (221200011101101) 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, 88863960 + ... + 91319238.

It is an arithmetic number, because the mean of its divisors is an integer number (9997654632000).

Almost surely, 2^{221200011101121} is an apocalyptic number.

It is an amenable number.

221200011101121 is a deficient number, since it is larger than the sum of its proper divisors (98724937122879).

221200011101121 is a wasteful number, since it uses less digits than its factorization.

221200011101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472053.

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

Adding to 221200011101121 its reverse (121101110002122), we get a palindrome (342301121103243).

The spelling of 221200011101121 in words is "two hundred twenty-one trillion, two hundred billion, eleven million, one hundred one thousand, one hundred twenty-one".