1204100031421 has 12 divisors (see below), whose sum is σ = 1483081192188. Its totient is φ = 971374814592.

The previous prime is 1204100031349. The next prime is 1204100031427. The reversal of 1204100031421 is 1241300014021.

It can be written as a sum of positive squares in 2 ways, for example, as 503547771321 + 700552260100 = 709611^2 + 836990^2 .

It is not a de Polignac number, because 1204100031421 - 2¹⁷ = 1204099900349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204100031427) 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, 722748286 + ... + 722749951.

It is an arithmetic number, because the mean of its divisors is an integer number (123590099349).

Almost surely, 2^{1204100031421} is an apocalyptic number.

It is an amenable number.

1204100031421 is a deficient number, since it is larger than the sum of its proper divisors (278981160767).

1204100031421 is a wasteful number, since it uses less digits than its factorization.

1204100031421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445498268 (or 1445498261 counting only the distinct ones).

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

Adding to 1204100031421 its reverse (1241300014021), we get a palindrome (2445400045442).

The spelling of 1204100031421 in words is "one trillion, two hundred four billion, one hundred million, thirty-one thousand, four hundred twenty-one".