100250061221 has 2 divisors, whose sum is σ = 100250061222. Its totient is φ = 100250061220.

The previous prime is 100250061211. The next prime is 100250061251. The reversal of 100250061221 is 122160052001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81621633025 + 18628428196 = 285695^2 + 136486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100250061221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100250061193 and 100250061202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100250061211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50125030610 + 50125030611.

It is an arithmetic number, because the mean of its divisors is an integer number (50125030611).

Almost surely, 2^100250061221 is an apocalyptic number.

It is an amenable number.

100250061221 is a deficient number, since it is larger than the sum of its proper divisors (1).

100250061221 is an equidigital number, since it uses as much as digits as its factorization.

100250061221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The spelling of 100250061221 in words is "one hundred billion, two hundred fifty million, sixty-one thousand, two hundred twenty-one".