1221111014 has 16 divisors (see below), whose sum is σ = 1848032928. Its totient is φ = 605121792.

The previous prime is 1221111007. The next prime is 1221111029. The reversal of 1221111014 is 4101111221.

It is a super-2 number, since 2×1221111014² = 2982224217024216392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1221111014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112724 + ... + 123080.

It is an arithmetic number, because the mean of its divisors is an integer number (115502058).

Almost surely, 2^1221111014 is an apocalyptic number.

1221111014 is a deficient number, since it is larger than the sum of its proper divisors (626921914).

1221111014 is a wasteful number, since it uses less digits than its factorization.

1221111014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10879.

The product of its (nonzero) digits is 16, while the sum is 14.

The square root of 1221111014 is about 34944.3988930987. The cubic root of 1221111014 is about 1068.8539900683.

Adding to 1221111014 its reverse (4101111221), we get a palindrome (5322222235).

The spelling of 1221111014 in words is "one billion, two hundred twenty-one million, one hundred eleven thousand, fourteen".