20112211021222 has 4 divisors (see below), whose sum is σ = 30168316531836. Its totient is φ = 10056105510610.

The previous prime is 20112211021169. The next prime is 20112211021277. The reversal of 20112211021222 is 22212011221102.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20112211021222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5028052755304 + ... + 5028052755307.

It is an arithmetic number, because the mean of its divisors is an integer number (7542079132959).

Almost surely, 2^{20112211021222} is an apocalyptic number.

20112211021222 is a deficient number, since it is larger than the sum of its proper divisors (10056105510614).

20112211021222 is a wasteful number, since it uses less digits than its factorization.

20112211021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10056105510613.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20112211021222 its reverse (22212011221102), we get a palindrome (42324222242324).

The spelling of 20112211021222 in words is "twenty trillion, one hundred twelve billion, two hundred eleven million, twenty-one thousand, two hundred twenty-two".