210100220120977 has 2 divisors, whose sum is σ = 210100220120978. Its totient is φ = 210100220120976.

The previous prime is 210100220120929. The next prime is 210100220121031. The reversal of 210100220120977 is 779021022001012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152727109274961 + 57373110846016 = 12358281^2 + 7574504^2 .

It is a cyclic number.

It is not a de Polignac number, because 210100220120977 - 2⁴³ = 201304127098769 is a prime.

It is not a weakly prime, because it can be changed into another prime (210100220120377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105050110060488 + 105050110060489.

It is an arithmetic number, because the mean of its divisors is an integer number (105050110060489).

Almost surely, 2^{210100220120977} is an apocalyptic number.

It is an amenable number.

210100220120977 is a deficient number, since it is larger than the sum of its proper divisors (1).

210100220120977 is an equidigital number, since it uses as much as digits as its factorization.

210100220120977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 34.

Adding to 210100220120977 its reverse (779021022001012), we get a palindrome (989121242121989).

The spelling of 210100220120977 in words is "two hundred ten trillion, one hundred billion, two hundred twenty million, one hundred twenty thousand, nine hundred seventy-seven".