1000121112021 has 8 divisors (see below), whose sum is σ = 1334072345760. Its totient is φ = 666458643152.

The previous prime is 1000121112017. The next prime is 1000121112037. The reversal of 1000121112021 is 1202111210001.

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

It is a cyclic number.

It is not a de Polignac number, because 1000121112021 - 2² = 1000121112017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000121111988 and 1000121112006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000121112721) 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, 72183135 + ... + 72196988.

It is an arithmetic number, because the mean of its divisors is an integer number (166759043220).

Almost surely, 2^{1000121112021} is an apocalyptic number.

It is an amenable number.

1000121112021 is a deficient number, since it is larger than the sum of its proper divisors (333951233739).

1000121112021 is a wasteful number, since it uses less digits than its factorization.

1000121112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144382435.

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

Adding to 1000121112021 its reverse (1202111210001), we get a palindrome (2202232322022).

The spelling of 1000121112021 in words is "one trillion, one hundred twenty-one million, one hundred twelve thousand, twenty-one".