1221041627 has 16 divisors (see below), whose sum is σ = 1328839680. Its totient is φ = 1115275392.

The previous prime is 1221041603. The next prime is 1221041659. The reversal of 1221041627 is 7261401221.

It is not a de Polignac number, because 1221041627 - 2¹⁴ = 1221025243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1221041596 and 1221041605.

It is not an unprimeable number, because it can be changed into a prime (1221040627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 839633 + ... + 841085.

It is an arithmetic number, because the mean of its divisors is an integer number (83052480).

Almost surely, 2^1221041627 is an apocalyptic number.

1221041627 is a deficient number, since it is larger than the sum of its proper divisors (107798053).

1221041627 is a wasteful number, since it uses less digits than its factorization.

1221041627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 1221041627 is about 34943.4060589405. The cubic root of 1221041627 is about 1068.8337445772.

Adding to 1221041627 its reverse (7261401221), we get a palindrome (8482442848).

The spelling of 1221041627 in words is "one billion, two hundred twenty-one million, forty-one thousand, six hundred twenty-seven".