1051222111 has 8 divisors (see below), whose sum is σ = 1072198400. Its totient is φ = 1030437720.

The previous prime is 1051222103. The next prime is 1051222127. The reversal of 1051222111 is 1112221501.

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 1051222111 - 2³ = 1051222103 is a prime.

It is a super-2 number, since 2×1051222111² = 2210135853310592642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051222181) 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, 36885 + ... + 58846.

It is an arithmetic number, because the mean of its divisors is an integer number (134024800).

Almost surely, 2^1051222111 is an apocalyptic number.

1051222111 is a deficient number, since it is larger than the sum of its proper divisors (20976289).

1051222111 is an equidigital number, since it uses as much as digits as its factorization.

1051222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95949.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 1051222111 is about 32422.5555902060. Note that the first 4 decimals coincide. The cubic root of 1051222111 is about 1016.7905369928.

Adding to 1051222111 its reverse (1112221501), we get a palindrome (2163443612).

It can be divided in two parts, 10512 and 22111, that added together give a palindrome (32623).

The spelling of 1051222111 in words is "one billion, fifty-one million, two hundred twenty-two thousand, one hundred eleven".