21210110022151 has 2 divisors, whose sum is σ = 21210110022152. Its totient is φ = 21210110022150.

The previous prime is 21210110022107. The next prime is 21210110022209. The reversal of 21210110022151 is 15122001101212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21210110022151 - 2¹¹ = 21210110020103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21210110052151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605055011075 + 10605055011076.

It is an arithmetic number, because the mean of its divisors is an integer number (10605055011076).

Almost surely, 2^{21210110022151} is an apocalyptic number.

21210110022151 is a deficient number, since it is larger than the sum of its proper divisors (1).

21210110022151 is an equidigital number, since it uses as much as digits as its factorization.

21210110022151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 21210110022151 its reverse (15122001101212), we get a palindrome (36332111123363).

The spelling of 21210110022151 in words is "twenty-one trillion, two hundred ten billion, one hundred ten million, twenty-two thousand, one hundred fifty-one".