1021223100401 has 16 divisors (see below), whose sum is σ = 1208849961600. Its totient is φ = 844105331328.

The previous prime is 1021223100383. The next prime is 1021223100421. The reversal of 1021223100401 is 1040013221201.

It is a de Polignac number, because none of the positive numbers 2^k-1021223100401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021223100401.

It is not an unprimeable number, because it can be changed into a prime (1021223100421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2944955 + ... + 3273408.

It is an arithmetic number, because the mean of its divisors is an integer number (75553122600).

Almost surely, 2^{1021223100401} is an apocalyptic number.

It is an amenable number.

1021223100401 is a deficient number, since it is larger than the sum of its proper divisors (187626861199).

1021223100401 is an equidigital number, since it uses as much as digits as its factorization.

1021223100401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6219208.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1021223100401 its reverse (1040013221201), we get a palindrome (2061236321602).

The spelling of 1021223100401 in words is "one trillion, twenty-one billion, two hundred twenty-three million, one hundred thousand, four hundred one".