20200211221020 has 24 divisors (see below), whose sum is σ = 56560591419024. Its totient is φ = 5386722992256.

The previous prime is 20200211220979. The next prime is 20200211221031. The reversal of 20200211221020 is 2012211200202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168335093449 + ... + 168335093568.

It is an arithmetic number, because the mean of its divisors is an integer number (2356691309126).

Almost surely, 2^{20200211221020} is an apocalyptic number.

20200211221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20200211221020 is an abundant number, since it is smaller than the sum of its proper divisors (36360380198004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20200211221020 is a wasteful number, since it uses less digits than its factorization.

20200211221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336670187029 (or 336670187027 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20200211221020 its reverse (2012211200202), we get a palindrome (22212422421222).

The spelling of 20200211221020 in words is "twenty trillion, two hundred billion, two hundred eleven million, two hundred twenty-one thousand, twenty".