10201121012123 has 4 divisors (see below), whose sum is σ = 10201461977208. Its totient is φ = 10200780047040.

The previous prime is 10201121012101. The next prime is 10201121012141. The reversal of 10201121012123 is 32121012110201.

It is a happy number.

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 10201121012123 - 2¹⁸ = 10201120749979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10201121012323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170437661 + ... + 170497502.

It is an arithmetic number, because the mean of its divisors is an integer number (2550365494302).

Almost surely, 2^{10201121012123} is an apocalyptic number.

10201121012123 is a deficient number, since it is larger than the sum of its proper divisors (340965085).

10201121012123 is an equidigital number, since it uses as much as digits as its factorization.

10201121012123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340965084.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 10201121012123 its reverse (32121012110201), we get a palindrome (42322133122324).

The spelling of 10201121012123 in words is "ten trillion, two hundred one billion, one hundred twenty-one million, twelve thousand, one hundred twenty-three".