20010101001210 has 48 divisors (see below), whose sum is σ = 54764486955360. Its totient is φ = 5055183410400.

The previous prime is 20010101001203. The next prime is 20010101001259. The reversal of 20010101001210 is 1210010101002.

It is a happy number.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20010101001192 and 20010101001201.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5850905016 + ... + 5850908435.

It is an arithmetic number, because the mean of its divisors is an integer number (1140926811570).

Almost surely, 2^{20010101001210} is an apocalyptic number.

20010101001210 is an abundant number, since it is smaller than the sum of its proper divisors (34754385954150).

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

20010101001210 is a wasteful number, since it uses less digits than its factorization.

20010101001210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11701813483 (or 11701813480 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20010101001210 its reverse (1210010101002), we get a palindrome (21220111102212).

The spelling of 20010101001210 in words is "twenty trillion, ten billion, one hundred one million, one thousand, two hundred ten".