20060221473 has 12 divisors (see below), whose sum is σ = 28981572048. Its totient is φ = 13370851800.

The previous prime is 20060221469. The next prime is 20060221523. The reversal of 20060221473 is 37412206002.

It is not a de Polignac number, because 20060221473 - 2² = 20060221469 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20060221453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170203 + ... + 262848.

It is an arithmetic number, because the mean of its divisors is an integer number (2415131004).

Almost surely, 2^20060221473 is an apocalyptic number.

It is an amenable number.

20060221473 is a deficient number, since it is larger than the sum of its proper divisors (8921350575).

20060221473 is a wasteful number, since it uses less digits than its factorization.

20060221473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438204 (or 438201 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

Adding to 20060221473 its reverse (37412206002), we get a palindrome (57472427475).

The spelling of 20060221473 in words is "twenty billion, sixty million, two hundred twenty-one thousand, four hundred seventy-three".