20021202120220 has 24 divisors (see below), whose sum is σ = 48050885088864. Its totient is φ = 6864412155456.

The previous prime is 20021202120187. The next prime is 20021202120223. The reversal of 20021202120220 is 2202120212002.

It is a junction number, because it is equal to n+sod(n) for n = 20021202120194 and 20021202120203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021202120223) 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, 71504293147 + ... + 71504293426.

It is an arithmetic number, because the mean of its divisors is an integer number (2002120212036).

Almost surely, 2^{20021202120220} is an apocalyptic number.

20021202120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021202120220 is an abundant number, since it is smaller than the sum of its proper divisors (28029682968644).

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

20021202120220 is a wasteful number, since it uses less digits than its factorization.

20021202120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143008586589 (or 143008586587 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20021202120220 its reverse (2202120212002), we get a palindrome (22223322332222).

The spelling of 20021202120220 in words is "twenty trillion, twenty-one billion, two hundred two million, one hundred twenty thousand, two hundred twenty".