100212000521 has 2 divisors, whose sum is σ = 100212000522. Its totient is φ = 100212000520.

The previous prime is 100212000509. The next prime is 100212000527. The reversal of 100212000521 is 125000212001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94457260921 + 5754739600 = 307339^2 + 75860^2 .

It is a cyclic number.

It is not a de Polignac number, because 100212000521 - 2¹⁸ = 100211738377 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100212000496 and 100212000505.

It is not a weakly prime, because it can be changed into another prime (100212000527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50106000260 + 50106000261.

It is an arithmetic number, because the mean of its divisors is an integer number (50106000261).

Almost surely, 2^100212000521 is an apocalyptic number.

It is an amenable number.

100212000521 is a deficient number, since it is larger than the sum of its proper divisors (1).

100212000521 is an equidigital number, since it uses as much as digits as its factorization.

100212000521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 100212000521 its reverse (125000212001), we get a palindrome (225212212522).

The spelling of 100212000521 in words is "one hundred billion, two hundred twelve million, five hundred twenty-one", and thus it is an aban number.