1221222121114 has 16 divisors (see below), whose sum is σ = 1835012950848. Its totient is φ = 609551481312.

The previous prime is 1221222121087. The next prime is 1221222121151. The reversal of 1221222121114 is 4111212221221.

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, 7295019 + ... + 7460545.

It is an arithmetic number, because the mean of its divisors is an integer number (114688309428).

Almost surely, 2^{1221222121114} is an apocalyptic number.

1221222121114 is a deficient number, since it is larger than the sum of its proper divisors (613790829734).

1221222121114 is a wasteful number, since it uses less digits than its factorization.

1221222121114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171909.

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

Adding to 1221222121114 its reverse (4111212221221), we get a palindrome (5332434342335).

The spelling of 1221222121114 in words is "one trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred fourteen".