121021112021222 has 96 divisors (see below), whose sum is σ = 217160029731456. Its totient is φ = 50404728729600.

The previous prime is 121021112021219. The next prime is 121021112021231. The reversal of 121021112021222 is 222120211120121.

It is a super-2 number, since 2×121021112021222² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121021112021194 and 121021112021203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9622408598 + ... + 9622421174.

It is an arithmetic number, because the mean of its divisors is an integer number (2262083643036).

Almost surely, 2^{121021112021222} is an apocalyptic number.

121021112021222 is a deficient number, since it is larger than the sum of its proper divisors (96138917710234).

121021112021222 is a wasteful number, since it uses less digits than its factorization.

121021112021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21742 (or 21735 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 121021112021222 its reverse (222120211120121), we get a palindrome (343141323141343).

The spelling of 121021112021222 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred twelve million, twenty-one thousand, two hundred twenty-two".