12220135401 has 16 divisors (see below), whose sum is σ = 16769329920. Its totient is φ = 7912176720.

The previous prime is 12220135379. The next prime is 12220135409. The reversal of 12220135401 is 10453102221.

It is not a de Polignac number, because 12220135401 - 2⁶ = 12220135337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12220135409) 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, 401215 + ... + 430596.

It is an arithmetic number, because the mean of its divisors is an integer number (1048083120).

Almost surely, 2^12220135401 is an apocalyptic number.

It is an amenable number.

12220135401 is a deficient number, since it is larger than the sum of its proper divisors (4549194519).

12220135401 is an equidigital number, since it uses as much as digits as its factorization.

12220135401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831956.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 12220135401 its reverse (10453102221), we get a palindrome (22673237622).

The spelling of 12220135401 in words is "twelve billion, two hundred twenty million, one hundred thirty-five thousand, four hundred one".