121021021222 has 16 divisors (see below), whose sum is σ = 185821325712. Its totient is φ = 59081611680.

The previous prime is 121021021201. The next prime is 121021021237. The reversal of 121021021222 is 222120120121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121021021196 and 121021021205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20973 + ... + 492424.

It is an arithmetic number, because the mean of its divisors is an integer number (11613832857).

Almost surely, 2^121021021222 is an apocalyptic number.

121021021222 is a deficient number, since it is larger than the sum of its proper divisors (64800304490).

121021021222 is a wasteful number, since it uses less digits than its factorization.

121021021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516183.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121021021222 its reverse (222120120121), we get a palindrome (343141141343).

The spelling of 121021021222 in words is "one hundred twenty-one billion, twenty-one million, twenty-one thousand, two hundred twenty-two".