12101220212 has 24 divisors (see below), whose sum is σ = 21463928640. Its totient is φ = 5969139840.

The previous prime is 12101220149. The next prime is 12101220223. The reversal of 12101220212 is 21202210121.

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 7 ways as a sum of consecutive naturals, for example, 44489 + ... + 161807.

It is an arithmetic number, because the mean of its divisors is an integer number (894330360).

Almost surely, 2^12101220212 is an apocalyptic number.

It is an amenable number.

12101220212 is a deficient number, since it is larger than the sum of its proper divisors (9362708428).

12101220212 is a wasteful number, since it uses less digits than its factorization.

12101220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117671 (or 117669 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12101220212 its reverse (21202210121), we get a palindrome (33303430333).

The spelling of 12101220212 in words is "twelve billion, one hundred one million, two hundred twenty thousand, two hundred twelve".