20020011221001 has 16 divisors (see below), whose sum is σ = 29173252209408. Its totient is φ = 12111158514000.

The previous prime is 20020011220973. The next prime is 20020011221047. The reversal of 20020011221001 is 10012211002002.

It is not a de Polignac number, because 20020011221001 - 2¹⁰ = 20020011219977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20020011226001) 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, 554522175 + ... + 554558276.

It is an arithmetic number, because the mean of its divisors is an integer number (1823328263088).

Almost surely, 2^{20020011221001} is an apocalyptic number.

It is an amenable number.

20020011221001 is a deficient number, since it is larger than the sum of its proper divisors (9153240988407).

20020011221001 is a wasteful number, since it uses less digits than its factorization.

20020011221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109081012.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20020011221001 its reverse (10012211002002), we get a palindrome (30032222223003).

The spelling of 20020011221001 in words is "twenty trillion, twenty billion, eleven million, two hundred twenty-one thousand, one".