100011221210977 has 2 divisors, whose sum is σ = 100011221210978. Its totient is φ = 100011221210976.

The previous prime is 100011221210963. The next prime is 100011221211023. The reversal of 100011221210977 is 779012122110001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59919226044001 + 40091995166976 = 7740751^2 + 6331824^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100011221210977 is a prime.

It is a super-2 number, since 2×100011221210977² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100011221210077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50005610605488 + 50005610605489.

It is an arithmetic number, because the mean of its divisors is an integer number (50005610605489).

Almost surely, 2^{100011221210977} is an apocalyptic number.

It is an amenable number.

100011221210977 is a deficient number, since it is larger than the sum of its proper divisors (1).

100011221210977 is an equidigital number, since it uses as much as digits as its factorization.

100011221210977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 34.

Adding to 100011221210977 its reverse (779012122110001), we get a palindrome (879023343320978).

The spelling of 100011221210977 in words is "one hundred trillion, eleven billion, two hundred twenty-one million, two hundred ten thousand, nine hundred seventy-seven".