1021111102203 has 16 divisors (see below), whose sum is σ = 1408754457600. Its totient is φ = 657209060640.

The previous prime is 1021111102189. The next prime is 1021111102373. The reversal of 1021111102203 is 3022011111201.

It is not a de Polignac number, because 1021111102203 - 2¹² = 1021111098107 is a prime.

It is a super-2 number, since 2×1021111102203² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021111102903) 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, 13063288 + ... + 13141221.

It is an arithmetic number, because the mean of its divisors is an integer number (88047153600).

Almost surely, 2^{1021111102203} is an apocalyptic number.

1021111102203 is a deficient number, since it is larger than the sum of its proper divisors (387643355397).

1021111102203 is a wasteful number, since it uses less digits than its factorization.

1021111102203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26204962.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1021111102203 its reverse (3022011111201), we get a palindrome (4043122213404).

The spelling of 1021111102203 in words is "one trillion, twenty-one billion, one hundred eleven million, one hundred two thousand, two hundred three".