20210220201029 has 2 divisors, whose sum is σ = 20210220201030. Its totient is φ = 20210220201028.

The previous prime is 20210220200983. The next prime is 20210220201053. The reversal of 20210220201029 is 92010202201202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14511353128129 + 5698867072900 = 3809377^2 + 2387230^2 .

It is a cyclic number.

It is not a de Polignac number, because 20210220201029 - 2¹⁶ = 20210220135493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20210220200995 and 20210220201013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20210220201329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105110100514 + 10105110100515.

It is an arithmetic number, because the mean of its divisors is an integer number (10105110100515).

Almost surely, 2^{20210220201029} is an apocalyptic number.

It is an amenable number.

20210220201029 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210220201029 is an equidigital number, since it uses as much as digits as its factorization.

20210220201029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 20210220201029 in words is "twenty trillion, two hundred ten billion, two hundred twenty million, two hundred one thousand, twenty-nine".