10102101210121 has 4 divisors (see below), whose sum is σ = 10102129841412. Its totient is φ = 10102072578832.

The previous prime is 10102101210119. The next prime is 10102101210127. The reversal of 10102101210121 is 12101210120101.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3826675403721 + 6275425806400 = 1956189^2 + 2505080^2 .

It is a cyclic number.

It is not a de Polignac number, because 10102101210121 - 2¹ = 10102101210119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10102101210127) 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, 13779706 + ... + 14494291.

It is an arithmetic number, because the mean of its divisors is an integer number (2525532460353).

Almost surely, 2^{10102101210121} is an apocalyptic number.

It is an amenable number.

10102101210121 is a deficient number, since it is larger than the sum of its proper divisors (28631291).

10102101210121 is an equidigital number, since it uses as much as digits as its factorization.

10102101210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28631290.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10102101210121 its reverse (12101210120101), we get a palindrome (22203311330222).

The spelling of 10102101210121 in words is "ten trillion, one hundred two billion, one hundred one million, two hundred ten thousand, one hundred twenty-one".