12211020120 has 64 divisors (see below), whose sum is σ = 39450993120. Its totient is φ = 3005789184.

The previous prime is 12211020113. The next prime is 12211020139. The reversal of 12211020120 is 2102011221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12211020096 and 12211020105.

It is a congruent number.

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, 3912229 + ... + 3915348.

Almost surely, 2^12211020120 is an apocalyptic number.

12211020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211020120 is an abundant number, since it is smaller than the sum of its proper divisors (27239973000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12211020120 is a wasteful number, since it uses less digits than its factorization.

12211020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7827604 (or 7827600 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12211020120 its reverse (2102011221), we get a palindrome (14313031341).

The spelling of 12211020120 in words is "twelve billion, two hundred eleven million, twenty thousand, one hundred twenty".