20210010012 has 18 divisors (see below), whose sum is σ = 51086414288. Its totient is φ = 6736669992.

The previous prime is 20210009983. The next prime is 20210010053. The reversal of 20210010012 is 21001001202.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20210009976 and 20210010003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280694548 + ... + 280694619.

Almost surely, 2^20210010012 is an apocalyptic number.

It is an amenable number.

20210010012 is an abundant number, since it is smaller than the sum of its proper divisors (30876404276).

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

20210010012 is a wasteful number, since it uses less digits than its factorization.

20210010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561389177 (or 561389172 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20210010012 its reverse (21001001202), we get a palindrome (41211011214).

The spelling of 20210010012 in words is "twenty billion, two hundred ten million, ten thousand, twelve".