1021203402105 has 8 divisors (see below), whose sum is σ = 1633925443392. Its totient is φ = 544641814448.

The previous prime is 1021203402077. The next prime is 1021203402127. The reversal of 1021203402105 is 5012043021201.

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

It is a cyclic number.

It is not a de Polignac number, because 1021203402105 - 2¹³ = 1021203393913 is a prime.

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, 34040113389 + ... + 34040113418.

It is an arithmetic number, because the mean of its divisors is an integer number (204240680424).

Almost surely, 2^{1021203402105} is an apocalyptic number.

1021203402105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1021203402105 is a deficient number, since it is larger than the sum of its proper divisors (612722041287).

1021203402105 is an equidigital number, since it uses as much as digits as its factorization.

1021203402105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68080226815.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 1021203402105 its reverse (5012043021201), we get a palindrome (6033246423306).

The spelling of 1021203402105 in words is "one trillion, twenty-one billion, two hundred three million, four hundred two thousand, one hundred five".