200221111091 has 2 divisors, whose sum is σ = 200221111092. Its totient is φ = 200221111090.

The previous prime is 200221111063. The next prime is 200221111133. The reversal of 200221111091 is 190111122002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200221111091 is a prime.

It is not a weakly prime, because it can be changed into another prime (200221111591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100110555545 + 100110555546.

It is an arithmetic number, because the mean of its divisors is an integer number (100110555546).

Almost surely, 2^200221111091 is an apocalyptic number.

200221111091 is a deficient number, since it is larger than the sum of its proper divisors (1).

200221111091 is an equidigital number, since it uses as much as digits as its factorization.

200221111091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 200221111091 its reverse (190111122002), we get a palindrome (390332233093).

The spelling of 200221111091 in words is "two hundred billion, two hundred twenty-one million, one hundred eleven thousand, ninety-one".