10201010121 has 12 divisors (see below), whose sum is σ = 14743971060. Its totient is φ = 6796437120.

The previous prime is 10201010119. The next prime is 10201010179. The reversal of 10201010121 is 12101010201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9368110521 + 832899600 = 96789^2 + 28860^2 .

It is not a de Polignac number, because 10201010121 - 2¹ = 10201010119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (10201010621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 337740 + ... + 366701.

It is an arithmetic number, because the mean of its divisors is an integer number (1228664255).

Almost surely, 2^10201010121 is an apocalyptic number.

It is an amenable number.

10201010121 is a deficient number, since it is larger than the sum of its proper divisors (4542960939).

10201010121 is a wasteful number, since it uses less digits than its factorization.

10201010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706056 (or 706053 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10201010121 its reverse (12101010201), we get a palindrome (22302020322).

The spelling of 10201010121 in words is "ten billion, two hundred one million, ten thousand, one hundred twenty-one".