1021110020203 has 16 divisors (see below), whose sum is σ = 1264755593920. Its totient is φ = 802765282176.

The previous prime is 1021110020191. The next prime is 1021110020209. The reversal of 1021110020203 is 3020200111201.

It is not a de Polignac number, because 1021110020203 - 2²⁹ = 1020573149291 is a prime.

It is a super-2 number, since 2×1021110020203² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (1021110020209) 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, 35721348 + ... + 35749921.

It is an arithmetic number, because the mean of its divisors is an integer number (79047224620).

Almost surely, 2^{1021110020203} is an apocalyptic number.

1021110020203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1021110020203 is a deficient number, since it is larger than the sum of its proper divisors (243645573717).

1021110020203 is a wasteful number, since it uses less digits than its factorization.

1021110020203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71471446.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1021110020203 its reverse (3020200111201), we get a palindrome (4041310131404).

The spelling of 1021110020203 in words is "one trillion, twenty-one billion, one hundred ten million, twenty thousand, two hundred three".