100021122997 has 2 divisors, whose sum is σ = 100021122998. Its totient is φ = 100021122996.

The previous prime is 100021122983. The next prime is 100021123019. The reversal of 100021122997 is 799221120001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70225530001 + 29795592996 = 265001^2 + 172614^2 .

It is a cyclic number.

It is not a de Polignac number, because 100021122997 - 2¹¹ = 100021120949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100021122907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50010561498 + 50010561499.

It is an arithmetic number, because the mean of its divisors is an integer number (50010561499).

Almost surely, 2^100021122997 is an apocalyptic number.

It is an amenable number.

100021122997 is a deficient number, since it is larger than the sum of its proper divisors (1).

100021122997 is an equidigital number, since it uses as much as digits as its factorization.

100021122997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 34.

Adding to 100021122997 its reverse (799221120001), we get a palindrome (899242242998).

The spelling of 100021122997 in words is "one hundred billion, twenty-one million, one hundred twenty-two thousand, nine hundred ninety-seven".