20357250211 has 2 divisors, whose sum is σ = 20357250212. Its totient is φ = 20357250210.

The previous prime is 20357250203. The next prime is 20357250227. The reversal of 20357250211 is 11205275302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20357250211 - 2³ = 20357250203 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20357250211.

It is not a weakly prime, because it can be changed into another prime (20357250311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10178625105 + 10178625106.

It is an arithmetic number, because the mean of its divisors is an integer number (10178625106).

Almost surely, 2^20357250211 is an apocalyptic number.

20357250211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20357250211 is an equidigital number, since it uses as much as digits as its factorization.

20357250211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 28.

The spelling of 20357250211 in words is "twenty billion, three hundred fifty-seven million, two hundred fifty thousand, two hundred eleven".