220102121311 has 4 divisors (see below), whose sum is σ = 223832665800. Its totient is φ = 216371576824.

The previous prime is 220102121273. The next prime is 220102121339. The reversal of 220102121311 is 113121201022.

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-220102121311 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 (220132121311) 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, 1865272156 + ... + 1865272273.

It is an arithmetic number, because the mean of its divisors is an integer number (55958166450).

Almost surely, 2^220102121311 is an apocalyptic number.

220102121311 is a deficient number, since it is larger than the sum of its proper divisors (3730544489).

220102121311 is an equidigital number, since it uses as much as digits as its factorization.

220102121311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3730544488.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 220102121311 its reverse (113121201022), we get a palindrome (333223322333).

The spelling of 220102121311 in words is "two hundred twenty billion, one hundred two million, one hundred twenty-one thousand, three hundred eleven".