20144026221 has 16 divisors (see below), whose sum is σ = 30574333440. Its totient is φ = 11677695920.

The previous prime is 20144026193. The next prime is 20144026237. The reversal of 20144026221 is 12262044102.

It is a happy number.

It is not a de Polignac number, because 20144026221 - 2²⁷ = 20009808493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20144026191 and 20144026200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144026321) 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, 13269351 + ... + 13270868.

It is an arithmetic number, because the mean of its divisors is an integer number (1910895840).

Almost surely, 2^20144026221 is an apocalyptic number.

It is an amenable number.

20144026221 is a deficient number, since it is larger than the sum of its proper divisors (10430307219).

20144026221 is a wasteful number, since it uses less digits than its factorization.

20144026221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26540256.

The product of its (nonzero) digits is 1536, while the sum is 24.

The spelling of 20144026221 in words is "twenty billion, one hundred forty-four million, twenty-six thousand, two hundred twenty-one".