20102120100212 has 6 divisors (see below), whose sum is σ = 35178710175378. Its totient is φ = 10051060050104.

The previous prime is 20102120100211. The next prime is 20102120100247. The reversal of 20102120100212 is 21200102120102.

It can be written as a sum of positive squares in only one way, i.e., 17898094816996 + 2204025283216 = 4230614^2 + 1484596^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102120100211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2512765012523 + ... + 2512765012530.

It is an arithmetic number, because the mean of its divisors is an integer number (5863118362563).

Almost surely, 2^{20102120100212} is an apocalyptic number.

It is an amenable number.

20102120100212 is a deficient number, since it is larger than the sum of its proper divisors (15076590075166).

20102120100212 is a wasteful number, since it uses less digits than its factorization.

20102120100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5025530025057 (or 5025530025055 counting only the distinct ones).

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

Adding to 20102120100212 its reverse (21200102120102), we get a palindrome (41302222220314).

The spelling of 20102120100212 in words is "twenty trillion, one hundred two billion, one hundred twenty million, one hundred thousand, two hundred twelve".