202120010010020 has 24 divisors (see below), whose sum is σ = 424569176023104. Its totient is φ = 80825688765536.

The previous prime is 202120010010019. The next prime is 202120010010031. The reversal of 202120010010020 is 20010010021202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 202120010009983 and 202120010010010.

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, 1394628134 + ... + 1394773053.

It is an arithmetic number, because the mean of its divisors is an integer number (17690382334296).

Almost surely, 2^{202120010010020} is an apocalyptic number.

202120010010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202120010010020 is an abundant number, since it is smaller than the sum of its proper divisors (222449166013084).

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

202120010010020 is a wasteful number, since it uses less digits than its factorization.

202120010010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789404819 (or 2789404817 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 202120010010020 its reverse (20010010021202), we get a palindrome (222130020031222).

The spelling of 202120010010020 in words is "two hundred two trillion, one hundred twenty billion, ten million, ten thousand, twenty".