1021240203401 has 12 divisors (see below), whose sum is σ = 1122964068912. Its totient is φ = 928033095000.

The previous prime is 1021240203367. The next prime is 1021240203413. The reversal of 1021240203401 is 1043020421201.

1021240203401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021240203401 - 2³⁰ = 1020166461577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021240203421) 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, 1361075 + ... + 1973576.

It is an arithmetic number, because the mean of its divisors is an integer number (93580339076).

Almost surely, 2^{1021240203401} is an apocalyptic number.

1021240203401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1021240203401 is a deficient number, since it is larger than the sum of its proper divisors (101723865511).

1021240203401 is a wasteful number, since it uses less digits than its factorization.

1021240203401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337204 (or 3337193 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1021240203401 its reverse (1043020421201), we get a palindrome (2064260624602).

The spelling of 1021240203401 in words is "one trillion, twenty-one billion, two hundred forty million, two hundred three thousand, four hundred one".