20020100001210 has 40 divisors (see below), whose sum is σ = 53831824449876. Its totient is φ = 5338693333440.

The previous prime is 20020100001157. The next prime is 20020100001271. The reversal of 20020100001210 is 1210000102002.

It can be written as a sum of positive squares in 2 ways, for example, as 19920948697521 + 99151303689 = 4463289^2 + 314883^2 .

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 = 20020100001192 and 20020100001201.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12358085611 + ... + 12358087230.

Almost surely, 2^{20020100001210} is an apocalyptic number.

20020100001210 is an abundant number, since it is smaller than the sum of its proper divisors (33811724448666).

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

20020100001210 is a wasteful number, since it uses less digits than its factorization.

20020100001210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24716172860 (or 24716172851 counting only the distinct ones).

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

Adding to 20020100001210 its reverse (1210000102002), we get a palindrome (21230100103212).

The spelling of 20020100001210 in words is "twenty trillion, twenty billion, one hundred million, one thousand, two hundred ten".