220100012021111 has 4 divisors (see below), whose sum is σ = 220794333825912. Its totient is φ = 219405690216312.

The previous prime is 220100012021083. The next prime is 220100012021143. The reversal of 220100012021111 is 111120210001022.

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-220100012021111 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 (220100012021711) 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, 347160901925 + ... + 347160902558.

It is an arithmetic number, because the mean of its divisors is an integer number (55198583456478).

Almost surely, 2^{220100012021111} is an apocalyptic number.

220100012021111 is a deficient number, since it is larger than the sum of its proper divisors (694321804801).

220100012021111 is an equidigital number, since it uses as much as digits as its factorization.

220100012021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694321804800.

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

Adding to 220100012021111 its reverse (111120210001022), we get a palindrome (331220222022133).

The spelling of 220100012021111 in words is "two hundred twenty trillion, one hundred billion, twelve million, twenty-one thousand, one hundred eleven".