20100211201212 has 24 divisors (see below), whose sum is σ = 46905037272912. Its totient is φ = 6699421190400.

The previous prime is 20100211201177. The next prime is 20100211201223. The reversal of 20100211201212 is 21210211200102.

It is a junction number, because it is equal to n+sod(n) for n = 20100211201191 and 20100211201200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81022239 + ... + 81269942.

It is an arithmetic number, because the mean of its divisors is an integer number (1954376553038).

Almost surely, 2^{20100211201212} is an apocalyptic number.

It is an amenable number.

20100211201212 is an abundant number, since it is smaller than the sum of its proper divisors (26804826071700).

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

20100211201212 is a wasteful number, since it uses less digits than its factorization.

20100211201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162302509 (or 162302507 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20100211201212 its reverse (21210211200102), we get a palindrome (41310422401314).

The spelling of 20100211201212 in words is "twenty trillion, one hundred billion, two hundred eleven million, two hundred one thousand, two hundred twelve".