1000221121201 has 8 divisors (see below), whose sum is σ = 1023503865120. Its totient is φ = 976939367712.

The previous prime is 1000221121189. The next prime is 1000221121243. The reversal of 1000221121201 is 1021211220001.

1000221121201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1000221121201 - 2¹³ = 1000221113009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000221121261) 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, 2038470 + ... + 2481088.

It is an arithmetic number, because the mean of its divisors is an integer number (127937983140).

Almost surely, 2^{1000221121201} is an apocalyptic number.

It is an amenable number.

1000221121201 is a deficient number, since it is larger than the sum of its proper divisors (23282743919).

1000221121201 is an equidigital number, since it uses as much as digits as its factorization.

1000221121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495215.

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

Adding to 1000221121201 its reverse (1021211220001), we get a palindrome (2021432341202).

The spelling of 1000221121201 in words is "one trillion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred one".