1021102020203 has 2 divisors, whose sum is σ = 1021102020204. Its totient is φ = 1021102020202.

The previous prime is 1021102020193. The next prime is 1021102020217. The reversal of 1021102020203 is 3020202011201.

It is a happy number.

It is an a-pointer prime, because the next prime (1021102020217) can be obtained adding 1021102020203 to its sum of digits (14).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021102020203 - 2⁶ = 1021102020139 is a prime.

It is a super-2 number, since 2×1021102020203² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1021102020233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510551010101 + 510551010102.

It is an arithmetic number, because the mean of its divisors is an integer number (510551010102).

Almost surely, 2^{1021102020203} is an apocalyptic number.

1021102020203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021102020203 is an equidigital number, since it uses as much as digits as its factorization.

1021102020203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1021102020203 its reverse (3020202011201), we get a palindrome (4041304031404).

The spelling of 1021102020203 in words is "one trillion, twenty-one billion, one hundred two million, twenty thousand, two hundred three".