1021101000121 has 4 divisors (see below), whose sum is σ = 1081165764852. Its totient is φ = 961036235392.

The previous prime is 1021101000103. The next prime is 1021101000131. The reversal of 1021101000121 is 1210001011201.

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 802034878096 + 219066122025 = 895564^2 + 468045^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021101000121 - 2¹³ = 1021100991929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021101000098 and 1021101000107.

It is not an unprimeable number, because it can be changed into a prime (1021101000131) 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, 30032382340 + ... + 30032382373.

It is an arithmetic number, because the mean of its divisors is an integer number (270291441213).

Almost surely, 2^{1021101000121} is an apocalyptic number.

It is an amenable number.

1021101000121 is a deficient number, since it is larger than the sum of its proper divisors (60064764731).

1021101000121 is an equidigital number, since it uses as much as digits as its factorization.

1021101000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60064764730.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1021101000121 its reverse (1210001011201), we get a palindrome (2231102011322).

The spelling of 1021101000121 in words is "one trillion, twenty-one billion, one hundred one million, one hundred twenty-one", and thus it is an aban number.