221020401414 has 32 divisors (see below), whose sum is σ = 465603425280. Its totient is φ = 69751318752.

The previous prime is 221020401391. The next prime is 221020401419. The reversal of 221020401414 is 414104020122.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221020401419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439989 + ... + 797264.

It is an arithmetic number, because the mean of its divisors is an integer number (14550107040).

Almost surely, 2^221020401414 is an apocalyptic number.

221020401414 is an abundant number, since it is smaller than the sum of its proper divisors (244583023866).

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

221020401414 is a wasteful number, since it uses less digits than its factorization.

221020401414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238844.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221020401414 its reverse (414104020122), we get a palindrome (635124421536).

The spelling of 221020401414 in words is "two hundred twenty-one billion, twenty million, four hundred one thousand, four hundred fourteen".