1000122102121 has 4 divisors (see below), whose sum is σ = 1004414471892. Its totient is φ = 995829732352.

The previous prime is 1000122102103. The next prime is 1000122102139. The reversal of 1000122102121 is 1212012210001.

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

It is an interprime number because it is at equal distance from previous prime (1000122102103) and next prime (1000122102139).

It can be written as a sum of positive squares in 2 ways, for example, as 195862894096 + 804259208025 = 442564^2 + 896805^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000122102121 - 2³³ = 991532167529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000122102151) 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, 2146184536 + ... + 2146185001.

It is an arithmetic number, because the mean of its divisors is an integer number (251103617973).

Almost surely, 2^{1000122102121} is an apocalyptic number.

It is an amenable number.

1000122102121 is a deficient number, since it is larger than the sum of its proper divisors (4292369771).

1000122102121 is an equidigital number, since it uses as much as digits as its factorization.

1000122102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292369770.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1000122102121 its reverse (1212012210001), we get a palindrome (2212134312122).

The spelling of 1000122102121 in words is "one trillion, one hundred twenty-two million, one hundred two thousand, one hundred twenty-one".