1221222034 has 4 divisors (see below), whose sum is σ = 1831833054. Its totient is φ = 610611016.

The previous prime is 1221222031. The next prime is 1221222089. The reversal of 1221222034 is 4302221221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4302221221 = 2473 ⋅1739677.

It can be written as a sum of positive squares in only one way, i.e., 687750625 + 533471409 = 26225^2 + 23097^2 .

It is not an unprimeable number, because it can be changed into a prime (1221222031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305305507 + ... + 305305510.

Almost surely, 2^1221222034 is an apocalyptic number.

1221222034 is a deficient number, since it is larger than the sum of its proper divisors (610611020).

1221222034 is an equidigital number, since it uses as much as digits as its factorization.

1221222034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610611019.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1221222034 is about 34945.9873805277. The cubic root of 1221222034 is about 1068.8863814924.

Adding to 1221222034 its reverse (4302221221), we get a palindrome (5523443255).

The spelling of 1221222034 in words is "one billion, two hundred twenty-one million, two hundred twenty-two thousand, thirty-four".