1220202020111 has 4 divisors (see below), whose sum is σ = 1220282518224. Its totient is φ = 1220121522000.

The previous prime is 1220202020101. The next prime is 1220202020117. The reversal of 1220202020111 is 1110202020221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220202020111 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 (1220202020117) 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, 40226315 + ... + 40256636.

It is an arithmetic number, because the mean of its divisors is an integer number (305070629556).

Almost surely, 2^{1220202020111} is an apocalyptic number.

1220202020111 is a deficient number, since it is larger than the sum of its proper divisors (80498113).

1220202020111 is an equidigital number, since it uses as much as digits as its factorization.

1220202020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80498112.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1220202020111 its reverse (1110202020221), we get a palindrome (2330404040332).

The spelling of 1220202020111 in words is "one trillion, two hundred twenty billion, two hundred two million, twenty thousand, one hundred eleven".