1220068451 has 24 divisors (see below), whose sum is σ = 1511503200. Its totient is φ = 963881856.

The previous prime is 1220068439. The next prime is 1220068481. The reversal of 1220068451 is 1548600221.

It is not a de Polignac number, because 1220068451 - 2⁶ = 1220068387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220068481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86975 + ... + 100023.

It is an arithmetic number, because the mean of its divisors is an integer number (62979300).

Almost surely, 2^1220068451 is an apocalyptic number.

1220068451 is a deficient number, since it is larger than the sum of its proper divisors (291434749).

1220068451 is a wasteful number, since it uses less digits than its factorization.

1220068451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13131 (or 13112 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 1220068451 is about 34929.4782526164. The cubic root of 1220068451 is about 1068.5497139086.

Adding to 1220068451 its reverse (1548600221), we get a palindrome (2768668672).

The spelling of 1220068451 in words is "one billion, two hundred twenty million, sixty-eight thousand, four hundred fifty-one".