1012203021111 has 16 divisors (see below), whose sum is σ = 1433937132000. Its totient is φ = 635107768704.

The previous prime is 1012203021103. The next prime is 1012203021113. The reversal of 1012203021111 is 1111203022101.

It is not a de Polignac number, because 1012203021111 - 2³ = 1012203021103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012203021113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34322836 + ... + 34352313.

It is an arithmetic number, because the mean of its divisors is an integer number (89621070750).

Almost surely, 2^{1012203021111} is an apocalyptic number.

1012203021111 is a deficient number, since it is larger than the sum of its proper divisors (421734110889).

1012203021111 is an frugal number, since it uses more digits than its factorization.

1012203021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68675203 (or 68675169 counting only the distinct ones).

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

Adding to 1012203021111 its reverse (1111203022101), we get a palindrome (2123406043212).

The spelling of 1012203021111 in words is "one trillion, twelve billion, two hundred three million, twenty-one thousand, one hundred eleven".