20200221111101 has 4 divisors (see below), whose sum is σ = 21388469411772. Its totient is φ = 19011972810432.

The previous prime is 20200221111017. The next prime is 20200221111143. The reversal of 20200221111101 is 10111112200202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12960360002500 + 7239861108601 = 3600050^2 + 2690699^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200221111101 - 2²² = 20200216916797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200221111901) 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, 594124150310 + ... + 594124150343.

It is an arithmetic number, because the mean of its divisors is an integer number (5347117352943).

Almost surely, 2^{20200221111101} is an apocalyptic number.

It is an amenable number.

20200221111101 is a deficient number, since it is larger than the sum of its proper divisors (1188248300671).

20200221111101 is a wasteful number, since it uses less digits than its factorization.

20200221111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188248300670.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20200221111101 its reverse (10111112200202), we get a palindrome (30311333311303).

The spelling of 20200221111101 in words is "twenty trillion, two hundred billion, two hundred twenty-one million, one hundred eleven thousand, one hundred one".