121221201211222 has 32 divisors (see below), whose sum is σ = 207870049316160. Its totient is φ = 51936376780800.

The previous prime is 121221201211211. The next prime is 121221201211237. The reversal of 121221201211222 is 222112102122121.

It is a junction number, because it is equal to n+sod(n) for n = 121221201211193 and 121221201211202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 664174554 + ... + 664357042.

It is an arithmetic number, because the mean of its divisors is an integer number (6495939041130).

Almost surely, 2^{121221201211222} is an apocalyptic number.

121221201211222 is a deficient number, since it is larger than the sum of its proper divisors (86648848104938).

121221201211222 is a wasteful number, since it uses less digits than its factorization.

121221201211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196456.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 121221201211222 its reverse (222112102122121), we get a palindrome (343333303333343).

The spelling of 121221201211222 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, two hundred one million, two hundred eleven thousand, two hundred twenty-two".