121101112220022 has 144 divisors (see below), whose sum is σ = 292747852103616. Its totient is φ = 36145165399200.

The previous prime is 121101112220021. The next prime is 121101112220027. The reversal of 121101112220022 is 220022211101121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121101112219977 and 121101112220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121101112220021) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1309055893 + ... + 1309148399.

It is an arithmetic number, because the mean of its divisors is an integer number (2032971195164).

Almost surely, 2^{121101112220022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121101112220022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146373926051808).

121101112220022 is an abundant number, since it is smaller than the sum of its proper divisors (171646739883594).

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

121101112220022 is a wasteful number, since it uses less digits than its factorization.

121101112220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101575 (or 101561 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121101112220022 its reverse (220022211101121), we get a palindrome (341123323321143).

The spelling of 121101112220022 in words is "one hundred twenty-one trillion, one hundred one billion, one hundred twelve million, two hundred twenty thousand, twenty-two".