202012020021101 has 2 divisors, whose sum is σ = 202012020021102. Its totient is φ = 202012020021100.

The previous prime is 202012020020963. The next prime is 202012020021107. The reversal of 202012020021101 is 101120020210202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130542073101001 + 71469946920100 = 11425501^2 + 8453990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202012020021101 is a prime.

It is a super-2 number, since 2×202012020021101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202012020021107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101006010010550 + 101006010010551.

It is an arithmetic number, because the mean of its divisors is an integer number (101006010010551).

Almost surely, 2^{202012020021101} is an apocalyptic number.

It is an amenable number.

202012020021101 is a deficient number, since it is larger than the sum of its proper divisors (1).

202012020021101 is an equidigital number, since it uses as much as digits as its factorization.

202012020021101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 202012020021101 its reverse (101120020210202), we get a palindrome (303132040231303).

The spelling of 202012020021101 in words is "two hundred two trillion, twelve billion, twenty million, twenty-one thousand, one hundred one".