121222113001221 has 16 divisors (see below), whose sum is σ = 172245296553984. Its totient is φ = 75656354211504.

The previous prime is 121222113001217. The next prime is 121222113001247. The reversal of 121222113001221 is 122100311222121.

It is not a de Polignac number, because 121222113001221 - 2² = 121222113001217 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222113001271) 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, 18689807581 + ... + 18689814066.

It is an arithmetic number, because the mean of its divisors is an integer number (10765331034624).

Almost surely, 2^{121222113001221} is an apocalyptic number.

It is an amenable number.

121222113001221 is a deficient number, since it is larger than the sum of its proper divisors (51023183552763).

121222113001221 is a wasteful number, since it uses less digits than its factorization.

121222113001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37379621720.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 121222113001221 its reverse (122100311222121), we get a palindrome (243322424223342).

The spelling of 121222113001221 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred thirteen million, one thousand, two hundred twenty-one".