1012210001111 has 4 divisors (see below), whose sum is σ = 1012212013800. Its totient is φ = 1012207988424.

The previous prime is 1012210001069. The next prime is 1012210001129. The reversal of 1012210001111 is 1111000122101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012210001111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012210001092 and 1012210001101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012210001711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469025 + ... + 1498133.

It is an arithmetic number, because the mean of its divisors is an integer number (253053003450).

Almost surely, 2^{1012210001111} is an apocalyptic number.

1012210001111 is a deficient number, since it is larger than the sum of its proper divisors (2012689).

1012210001111 is an equidigital number, since it uses as much as digits as its factorization.

1012210001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012688.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1012210001111 its reverse (1111000122101), we get a palindrome (2123210123212).

The spelling of 1012210001111 in words is "one trillion, twelve billion, two hundred ten million, one thousand, one hundred eleven".