20021120021101 has 8 divisors (see below), whose sum is σ = 20303249180544. Its totient is φ = 19738994793840.

The previous prime is 20021120020883. The next prime is 20021120021107. The reversal of 20021120021101 is 10112002112002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20021120021101 - 2³³ = 20012530086509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021120021107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10154760 + ... + 11965006.

It is an arithmetic number, because the mean of its divisors is an integer number (2537906147568).

Almost surely, 2^{20021120021101} is an apocalyptic number.

It is an amenable number.

20021120021101 is a deficient number, since it is larger than the sum of its proper divisors (282129159443).

20021120021101 is a wasteful number, since it uses less digits than its factorization.

20021120021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966091.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20021120021101 its reverse (10112002112002), we get a palindrome (30133122133103).

The spelling of 20021120021101 in words is "twenty trillion, twenty-one billion, one hundred twenty million, twenty-one thousand, one hundred one".