211202012021101 has 2 divisors, whose sum is σ = 211202012021102. Its totient is φ = 211202012021100.

The previous prime is 211202012021057. The next prime is 211202012021111. The reversal of 211202012021101 is 101120210202112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120334866575625 + 90867145445476 = 10969725^2 + 9532426^2 .

It is a cyclic number.

It is not a de Polignac number, because 211202012021101 - 2¹³ = 211202012012909 is a prime.

It is a super-2 number, since 2×211202012021101² (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 (211202012021111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105601006010550 + 105601006010551.

It is an arithmetic number, because the mean of its divisors is an integer number (105601006010551).

Almost surely, 2^{211202012021101} is an apocalyptic number.

It is an amenable number.

211202012021101 is a deficient number, since it is larger than the sum of its proper divisors (1).

211202012021101 is an equidigital number, since it uses as much as digits as its factorization.

211202012021101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211202012021101 its reverse (101120210202112), we get a palindrome (312322222223213).

The spelling of 211202012021101 in words is "two hundred eleven trillion, two hundred two billion, twelve million, twenty-one thousand, one hundred one".