121200201102221 has 8 divisors (see below), whose sum is σ = 121263849362040. Its totient is φ = 121136558234112.

The previous prime is 121200201102217. The next prime is 121200201102251. The reversal of 121200201102221 is 122201102002121.

It can be written as a sum of positive squares in 4 ways, for example, as 11502102675625 + 109698098426596 = 3391475^2 + 10473686^2 .

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 121200201102221 - 2² = 121200201102217 is a prime.

It is a super-2 number, since 2×121200201102221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121200201102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121200201102251) 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, 44022431 + ... + 46694483.

It is an arithmetic number, because the mean of its divisors is an integer number (15157981170255).

Almost surely, 2^{121200201102221} is an apocalyptic number.

It is an amenable number.

121200201102221 is a deficient number, since it is larger than the sum of its proper divisors (63648259819).

121200201102221 is a wasteful number, since it uses less digits than its factorization.

121200201102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2695855.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121200201102221 its reverse (122201102002121), we get a palindrome (243401303104342).

The spelling of 121200201102221 in words is "one hundred twenty-one trillion, two hundred billion, two hundred one million, one hundred two thousand, two hundred twenty-one".