20020221101001 has 32 divisors (see below), whose sum is σ = 29409899904000. Its totient is φ = 12012819992000.

The previous prime is 20020221100973. The next prime is 20020221101033. The reversal of 20020221101001 is 10010112202002.

It is a cyclic number.

It is not a de Polignac number, because 20020221101001 - 2²¹ = 20020219003849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20020221101701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86552500 + ... + 86783498.

It is an arithmetic number, because the mean of its divisors is an integer number (919059372000).

Almost surely, 2^{20020221101001} is an apocalyptic number.

It is an amenable number.

20020221101001 is a deficient number, since it is larger than the sum of its proper divisors (9389678802999).

20020221101001 is a wasteful number, since it uses less digits than its factorization.

20020221101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257117.

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

Adding to 20020221101001 its reverse (10010112202002), we get a palindrome (30030333303003).

It can be divided in two parts, 2002022 and 1101001, that multiplied together give a palindrome (2204228224022).

The spelling of 20020221101001 in words is "twenty trillion, twenty billion, two hundred twenty-one million, one hundred one thousand, one".