20212200210157 has 2 divisors, whose sum is σ = 20212200210158. Its totient is φ = 20212200210156.

The previous prime is 20212200210149. The next prime is 20212200210179. The reversal of 20212200210157 is 75101200221202.

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., 14620138729641 + 5592061480516 = 3823629^2 + 2364754^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212200210157 - 2³ = 20212200210149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212200210757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106100105078 + 10106100105079.

It is an arithmetic number, because the mean of its divisors is an integer number (10106100105079).

Almost surely, 2^{20212200210157} is an apocalyptic number.

It is an amenable number.

20212200210157 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212200210157 is an equidigital number, since it uses as much as digits as its factorization.

20212200210157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 25.

Adding to 20212200210157 its reverse (75101200221202), we get a palindrome (95313400431359).

The spelling of 20212200210157 in words is "twenty trillion, two hundred twelve billion, two hundred million, two hundred ten thousand, one hundred fifty-seven".