4021421100244 has 6 divisors (see below), whose sum is σ = 7037486925434. Its totient is φ = 2010710550120.

The previous prime is 4021421100187. The next prime is 4021421100251. The reversal of 4021421100244 is 4420011241204.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2643290672400 + 1378130427844 = 1625820^2 + 1173938^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502677637527 + ... + 502677637534.

Almost surely, 2^{4021421100244} is an apocalyptic number.

It is an amenable number.

4021421100244 is a deficient number, since it is larger than the sum of its proper divisors (3016065825190).

4021421100244 is a wasteful number, since it uses less digits than its factorization.

4021421100244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005355275065 (or 1005355275063 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 4021421100244 its reverse (4420011241204), we get a palindrome (8441432341448).

The spelling of 4021421100244 in words is "four trillion, twenty-one billion, four hundred twenty-one million, one hundred thousand, two hundred forty-four".