22021001002123 has 2 divisors, whose sum is σ = 22021001002124. Its totient is φ = 22021001002122.

The previous prime is 22021001002067. The next prime is 22021001002153. The reversal of 22021001002123 is 32120010012022.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22021001002123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22021001002097 and 22021001002106.

It is not a weakly prime, because it can be changed into another prime (22021001002153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010500501061 + 11010500501062.

It is an arithmetic number, because the mean of its divisors is an integer number (11010500501062).

Almost surely, 2^{22021001002123} is an apocalyptic number.

22021001002123 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021001002123 is an equidigital number, since it uses as much as digits as its factorization.

22021001002123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22021001002123 its reverse (32120010012022), we get a palindrome (54141011014145).

The spelling of 22021001002123 in words is "twenty-two trillion, twenty-one billion, one million, two thousand, one hundred twenty-three".