10120122002821 has 2 divisors, whose sum is σ = 10120122002822. Its totient is φ = 10120122002820.

The previous prime is 10120122002813. The next prime is 10120122002839. The reversal of 10120122002821 is 12820022102101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7340279397025 + 2779842605796 = 2709295^2 + 1667286^2 .

It is a cyclic number.

It is not a de Polignac number, because 10120122002821 - 2³ = 10120122002813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10120122002792 and 10120122002801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10120122002021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060061001410 + 5060061001411.

It is an arithmetic number, because the mean of its divisors is an integer number (5060061001411).

Almost surely, 2^{10120122002821} is an apocalyptic number.

It is an amenable number.

10120122002821 is a deficient number, since it is larger than the sum of its proper divisors (1).

10120122002821 is an equidigital number, since it uses as much as digits as its factorization.

10120122002821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 10120122002821 its reverse (12820022102101), we get a palindrome (22940144104922).

The spelling of 10120122002821 in words is "ten trillion, one hundred twenty billion, one hundred twenty-two million, two thousand, eight hundred twenty-one".