2121020000010 has 96 divisors (see below), whose sum is σ = 5952847904640. Its totient is φ = 522358134144.

The previous prime is 2121020000003. The next prime is 2121020000051. The reversal of 2121020000010 is 100000201212.

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 = 2121019999947 and 2121020000001.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17606304 + ... + 17726363.

It is an arithmetic number, because the mean of its divisors is an integer number (62008832340).

Almost surely, 2^{2121020000010} is an apocalyptic number.

2121020000010 is an abundant number, since it is smaller than the sum of its proper divisors (3831827904630).

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

2121020000010 is a wasteful number, since it uses less digits than its factorization.

2121020000010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35332732 (or 35332729 counting only the distinct ones).

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

Adding to 2121020000010 its reverse (100000201212), we get a palindrome (2221020201222).

The spelling of 2121020000010 in words is "two trillion, one hundred twenty-one billion, twenty million, ten", and thus it is an aban number.