20111021000212 has 24 divisors (see below), whose sum is σ = 35234367875840. Its totient is φ = 10044059862240.

The previous prime is 20111021000159. The next prime is 20111021000221. The reversal of 20111021000212 is 21200012011102.

It is a junction number, because it is equal to n+sod(n) for n = 20111021000192 and 20111021000201.

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, 78505438 + ... + 78761194.

Almost surely, 2^{20111021000212} is an apocalyptic number.

It is an amenable number.

20111021000212 is a deficient number, since it is larger than the sum of its proper divisors (15123346875628).

20111021000212 is a wasteful number, since it uses less digits than its factorization.

20111021000212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278071 (or 278069 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20111021000212 its reverse (21200012011102), we get a palindrome (41311033011314).

The spelling of 20111021000212 in words is "twenty trillion, one hundred eleven billion, twenty-one million, two hundred twelve", and thus it is an aban number.