2122010110021 has 2 divisors, whose sum is σ = 2122010110022. Its totient is φ = 2122010110020.

The previous prime is 2122010110001. The next prime is 2122010110037. The reversal of 2122010110021 is 1200110102212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1647962712900 + 474047397121 = 1283730^2 + 688511^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122010110021 - 2⁹ = 2122010109509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2122010109983 and 2122010110010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122010110001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061005055010 + 1061005055011.

It is an arithmetic number, because the mean of its divisors is an integer number (1061005055011).

Almost surely, 2^{2122010110021} is an apocalyptic number.

It is an amenable number.

2122010110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122010110021 is an equidigital number, since it uses as much as digits as its factorization.

2122010110021 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 2122010110021 its reverse (1200110102212), we get a palindrome (3322120212233).

The spelling of 2122010110021 in words is "two trillion, one hundred twenty-two billion, ten million, one hundred ten thousand, twenty-one".