20111102012212 has 6 divisors (see below), whose sum is σ = 35194428521378. Its totient is φ = 10055551006104.

The previous prime is 20111102012179. The next prime is 20111102012317. The reversal of 20111102012212 is 21221020111102.

It can be written as a sum of positive squares in only one way, i.e., 16096192144036 + 4014909868176 = 4012006^2 + 2003724^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2513887751523 + ... + 2513887751530.

Almost surely, 2^{20111102012212} is an apocalyptic number.

It is an amenable number.

20111102012212 is a deficient number, since it is larger than the sum of its proper divisors (15083326509166).

20111102012212 is a wasteful number, since it uses less digits than its factorization.

20111102012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027775503057 (or 5027775503055 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20111102012212 its reverse (21221020111102), we get a palindrome (41332122123314).

The spelling of 20111102012212 in words is "twenty trillion, one hundred eleven billion, one hundred two million, twelve thousand, two hundred twelve".