12211101221020 has 24 divisors (see below), whose sum is σ = 27615875069664. Its totient is φ = 4508714296896.

The previous prime is 12211101220999. The next prime is 12211101221023. The reversal of 12211101221020 is 2012210111221.

It is a super-2 number, since 2×12211101221020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12211101220985 and 12211101221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211101221023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23482886704 + ... + 23482887223.

It is an arithmetic number, because the mean of its divisors is an integer number (1150661461236).

Almost surely, 2^{12211101221020} is an apocalyptic number.

12211101221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211101221020 is an abundant number, since it is smaller than the sum of its proper divisors (15404773848644).

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

12211101221020 is a wasteful number, since it uses less digits than its factorization.

12211101221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46965773949 (or 46965773947 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12211101221020 its reverse (2012210111221), we get a palindrome (14223311332241).

The spelling of 12211101221020 in words is "twelve trillion, two hundred eleven billion, one hundred one million, two hundred twenty-one thousand, twenty".