20021102201001 has 16 divisors (see below), whose sum is σ = 29121697640448. Its totient is φ = 12133961984400.

The previous prime is 20021102200961. The next prime is 20021102201021. The reversal of 20021102201001 is 10010220112002.

It is not a de Polignac number, because 20021102201001 - 2⁶ = 20021102200937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20021102201021) 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, 11842440 + ... + 13427046.

It is an arithmetic number, because the mean of its divisors is an integer number (1820106102528).

Almost surely, 2^{20021102201001} is an apocalyptic number.

It is an amenable number.

20021102201001 is a deficient number, since it is larger than the sum of its proper divisors (9100595439447).

20021102201001 is a wasteful number, since it uses less digits than its factorization.

20021102201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967492.

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

Adding to 20021102201001 its reverse (10010220112002), we get a palindrome (30031322313003).

The spelling of 20021102201001 in words is "twenty trillion, twenty-one billion, one hundred two million, two hundred one thousand, one".