221010434113420 has 24 divisors (see below), whose sum is σ = 530425041872544. Its totient is φ = 75775005981696.

The previous prime is 221010434113367. The next prime is 221010434113457. The reversal of 221010434113420 is 24311434010122.

It is a happy number.

It is a super-2 number, since 2×221010434113420² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 789322978837 + ... + 789322979116.

It is an arithmetic number, because the mean of its divisors is an integer number (22101043411356).

Almost surely, 2^{221010434113420} is an apocalyptic number.

221010434113420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221010434113420 is an abundant number, since it is smaller than the sum of its proper divisors (309414607759124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221010434113420 is a wasteful number, since it uses less digits than its factorization.

221010434113420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578645957969 (or 1578645957967 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 221010434113420 its reverse (24311434010122), we get a palindrome (245321868123542).

The spelling of 221010434113420 in words is "two hundred twenty-one trillion, ten billion, four hundred thirty-four million, one hundred thirteen thousand, four hundred twenty".