1021223012401 has 4 divisors (see below), whose sum is σ = 1021273198452. Its totient is φ = 1021172826352.

The previous prime is 1021223012347. The next prime is 1021223012413. The reversal of 1021223012401 is 1042103221201.

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 220171162176 + 801051850225 = 469224^2 + 895015^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021223012401 - 2¹⁹ = 1021222488113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021223012431) 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, 25062490 + ... + 25103203.

It is an arithmetic number, because the mean of its divisors is an integer number (255318299613).

Almost surely, 2^{1021223012401} is an apocalyptic number.

It is an amenable number.

1021223012401 is a deficient number, since it is larger than the sum of its proper divisors (50186051).

1021223012401 is an equidigital number, since it uses as much as digits as its factorization.

1021223012401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50186050.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1021223012401 its reverse (1042103221201), we get a palindrome (2063326233602).

The spelling of 1021223012401 in words is "one trillion, twenty-one billion, two hundred twenty-three million, twelve thousand, four hundred one".