121002001023222 has 144 divisors (see below), whose sum is σ = 289240837332720. Its totient is φ = 36531321615360.

The previous prime is 121002001023121. The next prime is 121002001023227. The reversal of 121002001023222 is 222320100200121.

121002001023222 is a `hidden beast` number, since 1 + 210 + 0 + 200 + 1 + 0 + 232 + 22 = 666.

It is a super-2 number, since 2×121002001023222² (a number of 29 digits) contains 22 as substring.

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 = 121002001023195 and 121002001023204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002001023227) 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, 1354521054 + ... + 1354610382.

Almost surely, 2^{121002001023222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121002001023222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144620418666360).

121002001023222 is an abundant number, since it is smaller than the sum of its proper divisors (168238836309498).

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

121002001023222 is a wasteful number, since it uses less digits than its factorization.

121002001023222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91659 (or 91645 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 121002001023222 its reverse (222320100200121), we get a palindrome (343322101223343).

The spelling of 121002001023222 in words is "one hundred twenty-one trillion, two billion, one million, twenty-three thousand, two hundred twenty-two".