1010210112121 has 4 divisors (see below), whose sum is σ = 1154525842432. Its totient is φ = 865894381812.

The previous prime is 1010210112091. The next prime is 1010210112157. The reversal of 1010210112121 is 1212110120101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1010210112121 - 2²¹ = 1010208014969 is a prime.

It is a super-2 number, since 2×1010210112121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1010210112221) 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, 72157865145 + ... + 72157865158.

It is an arithmetic number, because the mean of its divisors is an integer number (288631460608).

Almost surely, 2^{1010210112121} is an apocalyptic number.

It is an amenable number.

1010210112121 is a deficient number, since it is larger than the sum of its proper divisors (144315730311).

1010210112121 is an equidigital number, since it uses as much as digits as its factorization.

1010210112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144315730310.

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

Adding to 1010210112121 its reverse (1212110120101), we get a palindrome (2222320232222).

The spelling of 1010210112121 in words is "one trillion, ten billion, two hundred ten million, one hundred twelve thousand, one hundred twenty-one".