10201012121121 has 16 divisors (see below), whose sum is σ = 13619728913280. Its totient is φ = 6791487891840.

The previous prime is 10201012121119. The next prime is 10201012121171. The reversal of 10201012121121 is 12112121010201.

It is a happy number.

It is not a de Polignac number, because 10201012121121 - 2¹ = 10201012121119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10201012121121.

It is not an unprimeable number, because it can be changed into a prime (10201012121101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14076741 + ... + 14783661.

It is an arithmetic number, because the mean of its divisors is an integer number (851233057080).

Almost surely, 2^{10201012121121} is an apocalyptic number.

It is an amenable number.

10201012121121 is a deficient number, since it is larger than the sum of its proper divisors (3418716792159).

10201012121121 is an equidigital number, since it uses as much as digits as its factorization.

10201012121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713416.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10201012121121 its reverse (12112121010201), we get a palindrome (22313133131322).

The spelling of 10201012121121 in words is "ten trillion, two hundred one billion, twelve million, one hundred twenty-one thousand, one hundred twenty-one".