10202122121801 has 2 divisors, whose sum is σ = 10202122121802. Its totient is φ = 10202122121800.

The previous prime is 10202122121797. The next prime is 10202122121827. The reversal of 10202122121801 is 10812122120201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10113958260025 + 88163861776 = 3180245^2 + 296924^2 .

It is a cyclic number.

It is not a de Polignac number, because 10202122121801 - 2² = 10202122121797 is a prime.

It is not a weakly prime, because it can be changed into another prime (10202122127801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101061060900 + 5101061060901.

It is an arithmetic number, because the mean of its divisors is an integer number (5101061060901).

Almost surely, 2^{10202122121801} is an apocalyptic number.

It is an amenable number.

10202122121801 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202122121801 is an equidigital number, since it uses as much as digits as its factorization.

10202122121801 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 23.

The spelling of 10202122121801 in words is "ten trillion, two hundred two billion, one hundred twenty-two million, one hundred twenty-one thousand, eight hundred one".