1221121014 has 16 divisors (see below), whose sum is σ = 2548426752. Its totient is φ = 389342888.

The previous prime is 1221121003. The next prime is 1221121021. The reversal of 1221121014 is 4101211221.

It is a super-2 number, since 2×1221121014² = 2982273061664776392, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1221120984 and 1221121002.

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, 4424214 + ... + 4424489.

It is an arithmetic number, because the mean of its divisors is an integer number (159276672).

Almost surely, 2^1221121014 is an apocalyptic number.

1221121014 is an abundant number, since it is smaller than the sum of its proper divisors (1327305738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1221121014 is a wasteful number, since it uses less digits than its factorization.

1221121014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8848731.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1221121014 is about 34944.5419772530. The cubic root of 1221121014 is about 1068.8569077694.

Adding to 1221121014 its reverse (4101211221), we get a palindrome (5322332235).

The spelling of 1221121014 in words is "one billion, two hundred twenty-one million, one hundred twenty-one thousand, fourteen".