1021010101111 has 96 divisors (see below), whose sum is σ = 1419509774592. Its totient is φ = 721727677440.

The previous prime is 1021010101099. The next prime is 1021010101123. The reversal of 1021010101111 is 1111010101201.

It is an interprime number because it is at equal distance from previous prime (1021010101099) and next prime (1021010101123).

It is a de Polignac number, because none of the positive numbers 2^k-1021010101111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021010101141) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 219239695 + ... + 219244351.

It is an arithmetic number, because the mean of its divisors is an integer number (14786560152).

Almost surely, 2^{1021010101111} is an apocalyptic number.

1021010101111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1021010101111 is a deficient number, since it is larger than the sum of its proper divisors (398499673481).

1021010101111 is a wasteful number, since it uses less digits than its factorization.

1021010101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5229 (or 5222 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 1021010101111 its reverse (1111010101201), we get a palindrome (2132020202312).

The spelling of 1021010101111 in words is "one trillion, twenty-one billion, ten million, one hundred one thousand, one hundred eleven".