20211212111110 has 32 divisors (see below), whose sum is σ = 36587256556032. Its totient is φ = 8038483079040.

The previous prime is 20211212111021. The next prime is 20211212111143. The reversal of 20211212111110 is 1111121211202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10002139 + ... + 11851801.

It is an arithmetic number, because the mean of its divisors is an integer number (1143351767376).

Almost surely, 2^{20211212111110} is an apocalyptic number.

20211212111110 is a deficient number, since it is larger than the sum of its proper divisors (16376044444922).

20211212111110 is a wasteful number, since it uses less digits than its factorization.

20211212111110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855888.

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

Adding to 20211212111110 its reverse (1111121211202), we get a palindrome (21322333322312).

The spelling of 20211212111110 in words is "twenty trillion, two hundred eleven billion, two hundred twelve million, one hundred eleven thousand, one hundred ten".