20110221120212 has 12 divisors (see below), whose sum is σ = 35193974763360. Its totient is φ = 10054799759256.

The previous prime is 20110221120133. The next prime is 20110221120239. The reversal of 20110221120212 is 21202112201102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77554598 + ... + 77813469.

It is an arithmetic number, because the mean of its divisors is an integer number (2932831230280).

Almost surely, 2^{20110221120212} is an apocalyptic number.

It is an amenable number.

20110221120212 is a deficient number, since it is larger than the sum of its proper divisors (15083753643148).

20110221120212 is a wasteful number, since it uses less digits than its factorization.

20110221120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155400430 (or 155400428 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20110221120212 its reverse (21202112201102), we get a palindrome (41312333321314).

The spelling of 20110221120212 in words is "twenty trillion, one hundred ten billion, two hundred twenty-one million, one hundred twenty thousand, two hundred twelve".