1220411401 has 24 divisors (see below), whose sum is σ = 1429207200. Its totient is φ = 1033058880.

The previous prime is 1220411399. The next prime is 1220411407. The reversal of 1220411401 is 1041140221.

It is a happy number.

It is not a de Polignac number, because 1220411401 - 2¹ = 1220411399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220411407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 231685 + ... + 236893.

It is an arithmetic number, because the mean of its divisors is an integer number (59550300).

Almost surely, 2^1220411401 is an apocalyptic number.

1220411401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1220411401 is a deficient number, since it is larger than the sum of its proper divisors (208795799).

1220411401 is a wasteful number, since it uses less digits than its factorization.

1220411401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5317 (or 5298 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1220411401 is about 34934.3870849340. The cubic root of 1220411401 is about 1068.6498243555.

Adding to 1220411401 its reverse (1041140221), we get a palindrome (2261551622).

The spelling of 1220411401 in words is "one billion, two hundred twenty million, four hundred eleven thousand, four hundred one".