19121222212222 has 8 divisors (see below), whose sum is σ = 30888128189016. Its totient is φ = 8825179482552.

The previous prime is 19121222212199. The next prime is 19121222212271. The reversal of 19121222212222 is 22221222212191.

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

It is a super-2 number, since 2×19121222212222² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367715811748 + ... + 367715811799.

It is an arithmetic number, because the mean of its divisors is an integer number (3861016023627).

Almost surely, 2^{19121222212222} is an apocalyptic number.

19121222212222 is a deficient number, since it is larger than the sum of its proper divisors (11766905976794).

19121222212222 is a wasteful number, since it uses less digits than its factorization.

19121222212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735431623562.

The product of its digits is 4608, while the sum is 31.

Subtracting from 19121222212222 its sum of digits (31), we obtain a palindrome (19121222212191).

The spelling of 19121222212222 in words is "nineteen trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred twelve thousand, two hundred twenty-two".