102201220111 has 4 divisors (see below), whose sum is σ = 102250762272. Its totient is φ = 102151677952.

The previous prime is 102201220097. The next prime is 102201220117. The reversal of 102201220111 is 111022102201.

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-102201220111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102201220091 and 102201220100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102201220117) 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, 24767986 + ... + 24772111.

It is an arithmetic number, because the mean of its divisors is an integer number (25562690568).

Almost surely, 2^102201220111 is an apocalyptic number.

102201220111 is a deficient number, since it is larger than the sum of its proper divisors (49542161).

102201220111 is an equidigital number, since it uses as much as digits as its factorization.

102201220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49542160.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102201220111 its reverse (111022102201), we get a palindrome (213223322312).

The spelling of 102201220111 in words is "one hundred two billion, two hundred one million, two hundred twenty thousand, one hundred eleven".