10205020123351 has 4 divisors (see below), whose sum is σ = 10235302082512. Its totient is φ = 10174738164192.

The previous prime is 10205020123343. The next prime is 10205020123379. The reversal of 10205020123351 is 15332102050201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10205020123351 - 2³ = 10205020123343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10205020123381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15140979075 + ... + 15140979748.

It is an arithmetic number, because the mean of its divisors is an integer number (2558825520628).

Almost surely, 2^{10205020123351} is an apocalyptic number.

10205020123351 is a deficient number, since it is larger than the sum of its proper divisors (30281959161).

10205020123351 is an equidigital number, since it uses as much as digits as its factorization.

10205020123351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30281959160.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 10205020123351 its reverse (15332102050201), we get a palindrome (25537122173552).

The spelling of 10205020123351 in words is "ten trillion, two hundred five billion, twenty million, one hundred twenty-three thousand, three hundred fifty-one".