1020121201203 has 16 divisors (see below), whose sum is σ = 1541883598080. Its totient is φ = 594726529824.

The previous prime is 1020121201201. The next prime is 1020121201217. The reversal of 1020121201203 is 3021021210201.

It is not a de Polignac number, because 1020121201203 - 2¹ = 1020121201201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020121201201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 688340151 + ... + 688341632.

It is an arithmetic number, because the mean of its divisors is an integer number (96367724880).

Almost surely, 2^{1020121201203} is an apocalyptic number.

1020121201203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1020121201203 is a deficient number, since it is larger than the sum of its proper divisors (521762396877).

1020121201203 is a wasteful number, since it uses less digits than its factorization.

1020121201203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376681818.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1020121201203 its reverse (3021021210201), we get a palindrome (4041142411404).

The spelling of 1020121201203 in words is "one trillion, twenty billion, one hundred twenty-one million, two hundred one thousand, two hundred three".