1011021212111 has 8 divisors (see below), whose sum is σ = 1024639236624. Its totient is φ = 997473931200.

The previous prime is 1011021211957. The next prime is 1011021212233. The reversal of 1011021212111 is 1112121201101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1011021212111 - 2¹⁰ = 1011021211087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011021212911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17657126 + ... + 17714291.

It is an arithmetic number, because the mean of its divisors is an integer number (128079904578).

Almost surely, 2^{1011021212111} is an apocalyptic number.

1011021212111 is a deficient number, since it is larger than the sum of its proper divisors (13618024513).

1011021212111 is a wasteful number, since it uses less digits than its factorization.

1011021212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35371801.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1011021212111 its reverse (1112121201101), we get a palindrome (2123142413212).

The spelling of 1011021212111 in words is "one trillion, eleven billion, twenty-one million, two hundred twelve thousand, one hundred eleven".