1222122221122 has 32 divisors (see below), whose sum is σ = 2030219541504. Its totient is φ = 547074699600.

The previous prime is 1222122221101. The next prime is 1222122221147. The reversal of 1222122221122 is 2211222212221.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1222122221093 and 1222122221102.

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, 5586747 + ... + 5801377.

It is an arithmetic number, because the mean of its divisors is an integer number (63444360672).

Almost surely, 2^{1222122221122} is an apocalyptic number.

1222122221122 is a deficient number, since it is larger than the sum of its proper divisors (808097320382).

1222122221122 is a wasteful number, since it uses less digits than its factorization.

1222122221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218574.

The product of its digits is 512, while the sum is 22.

Adding to 1222122221122 its reverse (2211222212221), we get a palindrome (3433344433343).

The spelling of 1222122221122 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred twenty-two".