1021401140244 has 24 divisors (see below), whose sum is σ = 2486889733440. Its totient is φ = 325664131584.

The previous prime is 1021401140237. The next prime is 1021401140261. The reversal of 1021401140244 is 4420411041201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1850364109 + ... + 1850364660.

It is an arithmetic number, because the mean of its divisors is an integer number (103620405560).

Almost surely, 2^{1021401140244} is an apocalyptic number.

It is an amenable number.

1021401140244 is an abundant number, since it is smaller than the sum of its proper divisors (1465488593196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021401140244 is a wasteful number, since it uses less digits than its factorization.

1021401140244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3700728799 (or 3700728797 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 1021401140244 its reverse (4420411041201), we get a palindrome (5441812181445).

The spelling of 1021401140244 in words is "one trillion, twenty-one billion, four hundred one million, one hundred forty thousand, two hundred forty-four".