20021102012201 has 4 divisors (see below), whose sum is σ = 20153692091904. Its totient is φ = 19888511932500.

The previous prime is 20021102012113. The next prime is 20021102012243. The reversal of 20021102012201 is 10221020112002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021102012201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021102012281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66295039625 + ... + 66295039926.

It is an arithmetic number, because the mean of its divisors is an integer number (5038423022976).

Almost surely, 2^{20021102012201} is an apocalyptic number.

It is an amenable number.

20021102012201 is a deficient number, since it is larger than the sum of its proper divisors (132590079703).

20021102012201 is a wasteful number, since it uses less digits than its factorization.

20021102012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132590079702.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20021102012201 its reverse (10221020112002), we get a palindrome (30242122124203).

The spelling of 20021102012201 in words is "twenty trillion, twenty-one billion, one hundred two million, twelve thousand, two hundred one".