221121200101121 has 8 divisors (see below), whose sum is σ = 246450873178080. Its totient is φ = 197160698541888.

The previous prime is 221121200101103. The next prime is 221121200101141. The reversal of 221121200101121 is 121101002121122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221121200101121 - 2⁶ = 221121200101057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 221121200101121.

It is not an unprimeable number, because it can be changed into a prime (221121200101141) 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, 342292879091 + ... + 342292879736.

It is an arithmetic number, because the mean of its divisors is an integer number (30806359147260).

Almost surely, 2^{221121200101121} is an apocalyptic number.

It is an amenable number.

221121200101121 is a deficient number, since it is larger than the sum of its proper divisors (25329673076959).

221121200101121 is a wasteful number, since it uses less digits than its factorization.

221121200101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684585758863.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221121200101121 its reverse (121101002121122), we get a palindrome (342222202222243).

The spelling of 221121200101121 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, two hundred million, one hundred one thousand, one hundred twenty-one".