20001210221012 has 12 divisors (see below), whose sum is σ = 35595374122560. Its totient is φ = 9831103328856.

The previous prime is 20001210221009. The next prime is 20001210221021. The reversal of 20001210221012 is 21012201210002.

It is a super-2 number, since 2×20001210221012² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42375445148 + ... + 42375445619.

It is an arithmetic number, because the mean of its divisors is an integer number (2966281176880).

Almost surely, 2^{20001210221012} is an apocalyptic number.

It is an amenable number.

20001210221012 is a deficient number, since it is larger than the sum of its proper divisors (15594163901548).

20001210221012 is a wasteful number, since it uses less digits than its factorization.

20001210221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84750890830 (or 84750890828 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20001210221012 its reverse (21012201210002), we get a palindrome (41013411431014).

The spelling of 20001210221012 in words is "twenty trillion, one billion, two hundred ten million, two hundred twenty-one thousand, twelve".