20210002202120 has 16 divisors (see below), whose sum is σ = 45472504954860. Its totient is φ = 8084000880832.

The previous prime is 20210002202041. The next prime is 20210002202123. The reversal of 20210002202120 is 2120220001202.

It can be written as a sum of positive squares in 2 ways, for example, as 18988451165476 + 1221551036644 = 4357574^2 + 1105238^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20210002202095 and 20210002202104.

It is not an unprimeable number, because it can be changed into a prime (20210002202123) 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, 252625027487 + ... + 252625027566.

Almost surely, 2^{20210002202120} is an apocalyptic number.

20210002202120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210002202120 is an abundant number, since it is smaller than the sum of its proper divisors (25262502752740).

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

20210002202120 is a wasteful number, since it uses less digits than its factorization.

20210002202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505250055064 (or 505250055060 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20210002202120 its reverse (2120220001202), we get a palindrome (22330222203322).

The spelling of 20210002202120 in words is "twenty trillion, two hundred ten billion, two million, two hundred two thousand, one hundred twenty".