20001002121210 has 32 divisors (see below), whose sum is σ = 52366260100032. Its totient is φ = 4848727786880.

The previous prime is 20001002121209. The next prime is 20001002121277. The reversal of 20001002121210 is 1212120010002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30304548339 + ... + 30304548998.

It is an arithmetic number, because the mean of its divisors is an integer number (1636445628126).

Almost surely, 2^{20001002121210} is an apocalyptic number.

20001002121210 is an abundant number, since it is smaller than the sum of its proper divisors (32365257978822).

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

20001002121210 is a wasteful number, since it uses less digits than its factorization.

20001002121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60609097358.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20001002121210 its reverse (1212120010002), we get a palindrome (21213122131212).

The spelling of 20001002121210 in words is "twenty trillion, one billion, two million, one hundred twenty-one thousand, two hundred ten".