100021221119977 has 2 divisors, whose sum is σ = 100021221119978. Its totient is φ = 100021221119976.

The previous prime is 100021221119903. The next prime is 100021221120043. The reversal of 100021221119977 is 779911122120001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100017180737881 + 4040382096 = 10000859^2 + 63564^2 .

It is a cyclic number.

It is not a de Polignac number, because 100021221119977 - 2¹⁵ = 100021221087209 is a prime.

It is not a weakly prime, because it can be changed into another prime (100021221113977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50010610559988 + 50010610559989.

It is an arithmetic number, because the mean of its divisors is an integer number (50010610559989).

Almost surely, 2^{100021221119977} is an apocalyptic number.

It is an amenable number.

100021221119977 is a deficient number, since it is larger than the sum of its proper divisors (1).

100021221119977 is an equidigital number, since it uses as much as digits as its factorization.

100021221119977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 43.

Adding to 100021221119977 its reverse (779911122120001), we get a palindrome (879932343239978).

The spelling of 100021221119977 in words is "one hundred trillion, twenty-one billion, two hundred twenty-one million, one hundred nineteen thousand, nine hundred seventy-seven".