1222122020111 has 4 divisors (see below), whose sum is σ = 1230914265000. Its totient is φ = 1213329775224.

The previous prime is 1222122020107. The next prime is 1222122020113. The reversal of 1222122020111 is 1110202212221.

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

It is a cyclic number.

It is not a de Polignac number, because 1222122020111 - 2² = 1222122020107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222122020111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222122020113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4396122236 + ... + 4396122513.

It is an arithmetic number, because the mean of its divisors is an integer number (307728566250).

Almost surely, 2^{1222122020111} is an apocalyptic number.

1222122020111 is a deficient number, since it is larger than the sum of its proper divisors (8792244889).

1222122020111 is an equidigital number, since it uses as much as digits as its factorization.

1222122020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8792244888.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1222122020111 its reverse (1110202212221), we get a palindrome (2332324232332).

The spelling of 1222122020111 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-two million, twenty thousand, one hundred eleven".