121102220222221 has 8 divisors (see below), whose sum is σ = 138403727649344. Its totient is φ = 103801010358240.

The previous prime is 121102220222183. The next prime is 121102220222273. The reversal of 121102220222221 is 122222022201121.

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 121102220222221 - 2¹¹ = 121102220220173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121102220222192 and 121102220222201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102220202221) 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, 73518000 + ... + 75147193.

It is an arithmetic number, because the mean of its divisors is an integer number (17300465956168).

Almost surely, 2^{121102220222221} is an apocalyptic number.

It is an amenable number.

121102220222221 is a deficient number, since it is larger than the sum of its proper divisors (17301507427123).

121102220222221 is a wasteful number, since it uses less digits than its factorization.

121102220222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148781571.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 121102220222221 its reverse (122222022201121), we get a palindrome (243324242423342).

The spelling of 121102220222221 in words is "one hundred twenty-one trillion, one hundred two billion, two hundred twenty million, two hundred twenty-two thousand, two hundred twenty-one".