2120210021101 has 2 divisors, whose sum is σ = 2120210021102. Its totient is φ = 2120210021100.

The previous prime is 2120210021087. The next prime is 2120210021113. The reversal of 2120210021101 is 1011200120212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1318021098601 + 802188922500 = 1148051^2 + 895650^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120210021101 - 2¹³ = 2120210012909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120210021141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060105010550 + 1060105010551.

It is an arithmetic number, because the mean of its divisors is an integer number (1060105010551).

Almost surely, 2^{2120210021101} is an apocalyptic number.

It is an amenable number.

2120210021101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120210021101 is an equidigital number, since it uses as much as digits as its factorization.

2120210021101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2120210021101 its reverse (1011200120212), we get a palindrome (3131410141313).

The spelling of 2120210021101 in words is "two trillion, one hundred twenty billion, two hundred ten million, twenty-one thousand, one hundred one".