20200221121011 has 4 divisors (see below), whose sum is σ = 26933628161352. Its totient is φ = 13466814080672.

The previous prime is 20200221120979. The next prime is 20200221121037. The reversal of 20200221121011 is 11012112200202.

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

It is a cyclic number.

It is not a de Polignac number, because 20200221121011 - 2⁵ = 20200221120979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20200221121061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3366703520166 + ... + 3366703520171.

It is an arithmetic number, because the mean of its divisors is an integer number (6733407040338).

Almost surely, 2^{20200221121011} is an apocalyptic number.

20200221121011 is a deficient number, since it is larger than the sum of its proper divisors (6733407040341).

20200221121011 is an equidigital number, since it uses as much as digits as its factorization.

20200221121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6733407040340.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20200221121011 its reverse (11012112200202), we get a palindrome (31212333321213).

The spelling of 20200221121011 in words is "twenty trillion, two hundred billion, two hundred twenty-one million, one hundred twenty-one thousand, eleven".