1021203421325 has 12 divisors (see below), whose sum is σ = 1295740900608. Its totient is φ = 797963602800.

The previous prime is 1021203421321. The next prime is 1021203421351. The reversal of 1021203421325 is 5231243021201.

It is not a de Polignac number, because 1021203421325 - 2² = 1021203421321 is a prime.

It is a super-3 number, since 3×1021203421325³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021203421294 and 1021203421303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021203421321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 474977261 + ... + 474979410.

It is an arithmetic number, because the mean of its divisors is an integer number (107978408384).

Almost surely, 2^{1021203421325} is an apocalyptic number.

It is an amenable number.

1021203421325 is a deficient number, since it is larger than the sum of its proper divisors (274537479283).

1021203421325 is an equidigital number, since it uses as much as digits as its factorization.

1021203421325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949956724 (or 949956719 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 1021203421325 its reverse (5231243021201), we get a palindrome (6252446442526).

The spelling of 1021203421325 in words is "one trillion, twenty-one billion, two hundred three million, four hundred twenty-one thousand, three hundred twenty-five".