1011222212111 has 8 divisors (see below), whose sum is σ = 1019186876400. Its totient is φ = 1003285642752.

The previous prime is 1011222212041. The next prime is 1011222212131. The reversal of 1011222212111 is 1112122221101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011222212111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1011222212111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011222212131) 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, 6951461 + ... + 7095438.

It is an arithmetic number, because the mean of its divisors is an integer number (127398359550).

Almost surely, 2^{1011222212111} is an apocalyptic number.

1011222212111 is a deficient number, since it is larger than the sum of its proper divisors (7964664289).

1011222212111 is a wasteful number, since it uses less digits than its factorization.

1011222212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14047465.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1011222212111 its reverse (1112122221101), we get a palindrome (2123344433212).

The spelling of 1011222212111 in words is "one trillion, eleven billion, two hundred twenty-two million, two hundred twelve thousand, one hundred eleven".