21120122002097 has 2 divisors, whose sum is σ = 21120122002098. Its totient is φ = 21120122002096.

The previous prime is 21120122002087. The next prime is 21120122002267. The reversal of 21120122002097 is 79020022102112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20771271117601 + 348850884496 = 4557551^2 + 590636^2 .

It is a cyclic number.

It is not a de Polignac number, because 21120122002097 - 2²² = 21120117807793 is a prime.

It is not a weakly prime, because it can be changed into another prime (21120122002087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560061001048 + 10560061001049.

It is an arithmetic number, because the mean of its divisors is an integer number (10560061001049).

Almost surely, 2^{21120122002097} is an apocalyptic number.

It is an amenable number.

21120122002097 is a deficient number, since it is larger than the sum of its proper divisors (1).

21120122002097 is an equidigital number, since it uses as much as digits as its factorization.

21120122002097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

The spelling of 21120122002097 in words is "twenty-one trillion, one hundred twenty billion, one hundred twenty-two million, two thousand, ninety-seven".