1001212010121 has 8 divisors (see below), whose sum is σ = 1340488556704. Its totient is φ = 664705068480.

The previous prime is 1001212010111. The next prime is 1001212010131. The reversal of 1001212010121 is 1210102121001.

It is an interprime number because it is at equal distance from previous prime (1001212010111) and next prime (1001212010131).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1001212010121 - 2⁵ = 1001212010089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001212010097 and 1001212010106.

It is not an unprimeable number, because it can be changed into a prime (1001212010111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 692400391 + ... + 692401836.

It is an arithmetic number, because the mean of its divisors is an integer number (167561069588).

Almost surely, 2^{1001212010121} is an apocalyptic number.

It is an amenable number.

1001212010121 is a deficient number, since it is larger than the sum of its proper divisors (339276546583).

1001212010121 is a wasteful number, since it uses less digits than its factorization.

1001212010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384802471.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1001212010121 its reverse (1210102121001), we get a palindrome (2211314131122).

The spelling of 1001212010121 in words is "one trillion, one billion, two hundred twelve million, ten thousand, one hundred twenty-one".