121221211226 has 8 divisors (see below), whose sum is σ = 182004828384. Its totient is φ = 60552935100.

The previous prime is 121221211159. The next prime is 121221211249. The reversal of 121221211226 is 622112122121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28832630 + ... + 28836833.

It is an arithmetic number, because the mean of its divisors is an integer number (22750603548).

Almost surely, 2^121221211226 is an apocalyptic number.

121221211226 is a deficient number, since it is larger than the sum of its proper divisors (60783617158).

121221211226 is a wasteful number, since it uses less digits than its factorization.

121221211226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57670516.

The product of its digits is 384, while the sum is 23.

Adding to 121221211226 its reverse (622112122121), we get a palindrome (743333333347).

The spelling of 121221211226 in words is "one hundred twenty-one billion, two hundred twenty-one million, two hundred eleven thousand, two hundred twenty-six".