2100212120101 has 2 divisors, whose sum is σ = 2100212120102. Its totient is φ = 2100212120100.

The previous prime is 2100212120003. The next prime is 2100212120131. The reversal of 2100212120101 is 1010212120012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1387283508900 + 712928611201 = 1177830^2 + 844351^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100212120101 - 2¹⁹ = 2100211595813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100212120131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050106060050 + 1050106060051.

It is an arithmetic number, because the mean of its divisors is an integer number (1050106060051).

Almost surely, 2^{2100212120101} is an apocalyptic number.

It is an amenable number.

2100212120101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100212120101 is an equidigital number, since it uses as much as digits as its factorization.

2100212120101 is an evil number, because the sum of its binary digits is even.

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

Adding to 2100212120101 its reverse (1010212120012), we get a palindrome (3110424240113).

The spelling of 2100212120101 in words is "two trillion, one hundred billion, two hundred twelve million, one hundred twenty thousand, one hundred one".