121102211321238 has 128 divisors (see below), whose sum is σ = 299552731269120. Its totient is φ = 31874512158720.

The previous prime is 121102211321237. The next prime is 121102211321339. The reversal of 121102211321238 is 832123112201121.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102211321237) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5677078 + ... + 16566038.

It is an arithmetic number, because the mean of its divisors is an integer number (2340255713040).

Almost surely, 2^{121102211321238} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121102211321238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149776365634560).

121102211321238 is an abundant number, since it is smaller than the sum of its proper divisors (178450519947882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121102211321238 is a wasteful number, since it uses less digits than its factorization.

121102211321238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10889422.

The product of its (nonzero) digits is 2304, while the sum is 30.

Adding to 121102211321238 its reverse (832123112201121), we get a palindrome (953225323522359).

The spelling of 121102211321238 in words is "one hundred twenty-one trillion, one hundred two billion, two hundred eleven million, three hundred twenty-one thousand, two hundred thirty-eight".