100121453 has 2 divisors, whose sum is σ = 100121454. Its totient is φ = 100121452.

The previous prime is 100121447. The next prime is 100121473. The reversal of 100121453 is 354121001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81956809 + 18164644 = 9053^2 + 4262^2 .

It is a cyclic number.

It is not a de Polignac number, because 100121453 - 2¹² = 100117357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100121423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060726 + 50060727.

It is an arithmetic number, because the mean of its divisors is an integer number (50060727).

Almost surely, 2^100121453 is an apocalyptic number.

It is an amenable number.

100121453 is a deficient number, since it is larger than the sum of its proper divisors (1).

100121453 is an equidigital number, since it uses as much as digits as its factorization.

100121453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 100121453 is about 10006.0708072650. The cubic root of 100121453 is about 464.3467189673.

Adding to 100121453 its reverse (354121001), we get a palindrome (454242454).

The spelling of 100121453 in words is "one hundred million, one hundred twenty-one thousand, four hundred fifty-three".