20010021220101 has 8 divisors (see below), whose sum is σ = 29105485411104. Its totient is φ = 12127285587920.

The previous prime is 20010021220087. The next prime is 20010021220117. The reversal of 20010021220101 is 10102212001002.

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 20010021220101 - 2⁹ = 20010021219589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010021220601) 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, 303182139666 + ... + 303182139731.

It is an arithmetic number, because the mean of its divisors is an integer number (3638185676388).

Almost surely, 2^{20010021220101} is an apocalyptic number.

It is an amenable number.

20010021220101 is a deficient number, since it is larger than the sum of its proper divisors (9095464191003).

20010021220101 is a wasteful number, since it uses less digits than its factorization.

20010021220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606364279411.

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

Adding to 20010021220101 its reverse (10102212001002), we get a palindrome (30112233221103).

The spelling of 20010021220101 in words is "twenty trillion, ten billion, twenty-one million, two hundred twenty thousand, one hundred one".