20120010021212 has 24 divisors (see below), whose sum is σ = 35634774586320. Its totient is φ = 9939072425600.

The previous prime is 20120010021191. The next prime is 20120010021239. The reversal of 20120010021212 is 21212001002102.

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, 53132537 + ... + 53509872.

It is an arithmetic number, because the mean of its divisors is an integer number (1484782274430).

Almost surely, 2^{20120010021212} is an apocalyptic number.

It is an amenable number.

20120010021212 is a deficient number, since it is larger than the sum of its proper divisors (15514764565108).

20120010021212 is a wasteful number, since it uses less digits than its factorization.

20120010021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106642981 (or 106642979 counting only the distinct ones).

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

Adding to 20120010021212 its reverse (21212001002102), we get a palindrome (41332011023314).

The spelling of 20120010021212 in words is "twenty trillion, one hundred twenty billion, ten million, twenty-one thousand, two hundred twelve".