1021201121015 has 8 divisors (see below), whose sum is σ = 1255330158768. Its totient is φ = 797035021120.

The previous prime is 1021201120913. The next prime is 1021201121029. The reversal of 1021201121015 is 5101211021201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1021201121015 - 2¹⁴ = 1021201104631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021201120984 and 1021201121002.

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, 2490734237 + ... + 2490734646.

It is an arithmetic number, because the mean of its divisors is an integer number (156916269846).

Almost surely, 2^{1021201121015} is an apocalyptic number.

1021201121015 is a deficient number, since it is larger than the sum of its proper divisors (234129037753).

1021201121015 is an equidigital number, since it uses as much as digits as its factorization.

1021201121015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4981468929.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 1021201121015 its reverse (5101211021201), we get a palindrome (6122412142216).

The spelling of 1021201121015 in words is "one trillion, twenty-one billion, two hundred one million, one hundred twenty-one thousand, fifteen".