1021101301243 has 16 divisors (see below), whose sum is σ = 1076335369216. Its totient is φ = 967441669920.

The previous prime is 1021101301219. The next prime is 1021101301261. The reversal of 1021101301243 is 3421031011201.

It is a cyclic number.

It is not a de Polignac number, because 1021101301243 - 2²¹ = 1021099204091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021101301243.

It is not an unprimeable number, because it can be changed into a prime (1021101301343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1169496 + ... + 1846597.

It is an arithmetic number, because the mean of its divisors is an integer number (67270960576).

Almost surely, 2^{1021101301243} is an apocalyptic number.

1021101301243 is a deficient number, since it is larger than the sum of its proper divisors (55234067973).

1021101301243 is a wasteful number, since it uses less digits than its factorization.

1021101301243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3016354.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1021101301243 its reverse (3421031011201), we get a palindrome (4442132312444).

The spelling of 1021101301243 in words is "one trillion, twenty-one billion, one hundred one million, three hundred one thousand, two hundred forty-three".