220010020021157 has 2 divisors, whose sum is σ = 220010020021158. Its totient is φ = 220010020021156.

The previous prime is 220010020021111. The next prime is 220010020021219. The reversal of 220010020021157 is 751120020010022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192516346500676 + 27493673520481 = 13875026^2 + 5243441^2 .

It is a cyclic number.

It is not a de Polignac number, because 220010020021157 - 2¹⁴ = 220010020004773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220010023021157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110005010010578 + 110005010010579.

It is an arithmetic number, because the mean of its divisors is an integer number (110005010010579).

Almost surely, 2^{220010020021157} is an apocalyptic number.

It is an amenable number.

220010020021157 is a deficient number, since it is larger than the sum of its proper divisors (1).

220010020021157 is an equidigital number, since it uses as much as digits as its factorization.

220010020021157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 23.

Adding to 220010020021157 its reverse (751120020010022), we get a palindrome (971130040031179).

The spelling of 220010020021157 in words is "two hundred twenty trillion, ten billion, twenty million, twenty-one thousand, one hundred fifty-seven".