1021200441231 has 8 divisors (see below), whose sum is σ = 1362263821360. Its totient is φ = 680468677632.

The previous prime is 1021200441211. The next prime is 1021200441263. The reversal of 1021200441231 is 1321440021201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1021200441231 - 2³⁰ = 1020126699407 is a prime.

It is a super-4 number, since 4×1021200441231⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021200441198 and 1021200441207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021200441211) 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, 82896946 + ... + 82909263.

It is an arithmetic number, because the mean of its divisors is an integer number (170282977670).

Almost surely, 2^{1021200441231} is an apocalyptic number.

1021200441231 is a deficient number, since it is larger than the sum of its proper divisors (341063380129).

1021200441231 is a wasteful number, since it uses less digits than its factorization.

1021200441231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165808265.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1021200441231 its reverse (1321440021201), we get a palindrome (2342640462432).

The spelling of 1021200441231 in words is "one trillion, twenty-one billion, two hundred million, four hundred forty-one thousand, two hundred thirty-one".