12211201022220 has 144 divisors (see below), whose sum is σ = 38284048927488. Its totient is φ = 3148131018240.

The previous prime is 12211201022219. The next prime is 12211201022221. The reversal of 12211201022220 is 2222010211221.

It is a happy number.

12211201022220 is a `hidden beast` number, since 1 + 221 + 1 + 201 + 0 + 22 + 220 = 666.

It is an interprime number because it is at equal distance from previous prime (12211201022219) and next prime (12211201022221).

It is a super-2 number, since 2×12211201022220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12211201022193 and 12211201022202.

It is not an unprimeable number, because it can be changed into a prime (12211201022221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4793596 + ... + 6884835.

Almost surely, 2^{12211201022220} is an apocalyptic number.

12211201022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211201022220 is an abundant number, since it is smaller than the sum of its proper divisors (26072847905268).

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

12211201022220 is a wasteful number, since it uses less digits than its factorization.

12211201022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11678640 (or 11678635 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12211201022220 its reverse (2222010211221), we get a palindrome (14433211233441).

The spelling of 12211201022220 in words is "twelve trillion, two hundred eleven billion, two hundred one million, twenty-two thousand, two hundred twenty".