20010120212 has 24 divisors (see below), whose sum is σ = 35140644000. Its totient is φ = 9969974496.

The previous prime is 20010120211. The next prime is 20010120217. The reversal of 20010120212 is 21202101002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20010120193 and 20010120202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010120211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2759063 + ... + 2766305.

It is an arithmetic number, because the mean of its divisors is an integer number (1464193500).

Almost surely, 2^20010120212 is an apocalyptic number.

It is an amenable number.

20010120212 is a deficient number, since it is larger than the sum of its proper divisors (15130523788).

20010120212 is a wasteful number, since it uses less digits than its factorization.

20010120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9575 (or 9573 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20010120212 its reverse (21202101002), we get a palindrome (41212221214).

The spelling of 20010120212 in words is "twenty billion, ten million, one hundred twenty thousand, two hundred twelve".