20120221110212 has 48 divisors (see below), whose sum is σ = 36369357986304. Its totient is φ = 9729391776000.

The previous prime is 20120221110169. The next prime is 20120221110247. The reversal of 20120221110212 is 21201112202102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1595443787 + ... + 1595456397.

It is an arithmetic number, because the mean of its divisors is an integer number (757694958048).

Almost surely, 2^{20120221110212} is an apocalyptic number.

It is an amenable number.

20120221110212 is a deficient number, since it is larger than the sum of its proper divisors (16249136876092).

20120221110212 is a wasteful number, since it uses less digits than its factorization.

20120221110212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19820 (or 19818 counting only the distinct ones).

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

Adding to 20120221110212 its reverse (21201112202102), we get a palindrome (41321333312314).

The spelling of 20120221110212 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-one million, one hundred ten thousand, two hundred twelve".