200221021440977 has 2 divisors, whose sum is σ = 200221021440978. Its totient is φ = 200221021440976.

The previous prime is 200221021440907. The next prime is 200221021441171. The reversal of 200221021440977 is 779044120122002.

200221021440977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189855770361856 + 10365251079121 = 13778816^2 + 3219511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200221021440977 is a prime.

It is not a weakly prime, because it can be changed into another prime (200221021440907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100110510720488 + 100110510720489.

It is an arithmetic number, because the mean of its divisors is an integer number (100110510720489).

Almost surely, 2^{200221021440977} is an apocalyptic number.

It is an amenable number.

200221021440977 is a deficient number, since it is larger than the sum of its proper divisors (1).

200221021440977 is an equidigital number, since it uses as much as digits as its factorization.

200221021440977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 41.

Adding to 200221021440977 its reverse (779044120122002), we get a palindrome (979265141562979).

The spelling of 200221021440977 in words is "two hundred trillion, two hundred twenty-one billion, twenty-one million, four hundred forty thousand, nine hundred seventy-seven".