1000121022001 has 4 divisors (see below), whose sum is σ = 1058951670372. Its totient is φ = 941290373632.

The previous prime is 1000121021993. The next prime is 1000121022049. The reversal of 1000121022001 is 1002201210001.

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 769437734976 + 230683287025 = 877176^2 + 480295^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000121022001 - 2³ = 1000121021993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000121022071) 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, 29415324160 + ... + 29415324193.

It is an arithmetic number, because the mean of its divisors is an integer number (264737917593).

Almost surely, 2^{1000121022001} is an apocalyptic number.

It is an amenable number.

1000121022001 is a deficient number, since it is larger than the sum of its proper divisors (58830648371).

1000121022001 is an equidigital number, since it uses as much as digits as its factorization.

1000121022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58830648370.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1000121022001 its reverse (1002201210001), we get a palindrome (2002322232002).

The spelling of 1000121022001 in words is "one trillion, one hundred twenty-one million, twenty-two thousand, one".