202102110021029 has 2 divisors, whose sum is σ = 202102110021030. Its totient is φ = 202102110021028.

The previous prime is 202102110020971. The next prime is 202102110021041. The reversal of 202102110021029 is 920120011201202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170229480028804 + 31872629992225 = 13047202^2 + 5645585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202102110021029 is a prime.

It is a super-2 number, since 2×202102110021029² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202102110020995 and 202102110021013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202102110081029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101051055010514 + 101051055010515.

It is an arithmetic number, because the mean of its divisors is an integer number (101051055010515).

Almost surely, 2^{202102110021029} is an apocalyptic number.

It is an amenable number.

202102110021029 is a deficient number, since it is larger than the sum of its proper divisors (1).

202102110021029 is an equidigital number, since it uses as much as digits as its factorization.

202102110021029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 202102110021029 in words is "two hundred two trillion, one hundred two billion, one hundred ten million, twenty-one thousand, twenty-nine".