1231221014 has 16 divisors (see below), whose sum is σ = 1945394880. Its totient is φ = 582801480.

The previous prime is 1231221001. The next prime is 1231221029. The reversal of 1231221014 is 4101221321.

It is a junction number, because it is equal to n+sod(n) for n = 1231220983 and 1231221001.

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, 47597 + ... + 68759.

It is an arithmetic number, because the mean of its divisors is an integer number (121587180).

Almost surely, 2^1231221014 is an apocalyptic number.

1231221014 is a deficient number, since it is larger than the sum of its proper divisors (714173866).

1231221014 is a wasteful number, since it uses less digits than its factorization.

1231221014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22715.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1231221014 is about 35088.7590832164. The cubic root of 1231221014 is about 1071.7956903231.

Adding to 1231221014 its reverse (4101221321), we get a palindrome (5332442335).

The spelling of 1231221014 in words is "one billion, two hundred thirty-one million, two hundred twenty-one thousand, fourteen".