1220122010111 has 4 divisors (see below), whose sum is σ = 1220691896424. Its totient is φ = 1219552123800.

The previous prime is 1220122010087. The next prime is 1220122010123. The reversal of 1220122010111 is 1110102210221.

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 1220122010111 - 2¹⁰ = 1220122009087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220122010911) 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, 284939945 + ... + 284944226.

It is an arithmetic number, because the mean of its divisors is an integer number (305172974106).

Almost surely, 2^{1220122010111} is an apocalyptic number.

1220122010111 is a deficient number, since it is larger than the sum of its proper divisors (569886313).

1220122010111 is an equidigital number, since it uses as much as digits as its factorization.

1220122010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569886312.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1220122010111 its reverse (1110102210221), we get a palindrome (2330224220332).

The spelling of 1220122010111 in words is "one trillion, two hundred twenty billion, one hundred twenty-two million, ten thousand, one hundred eleven".