12211101021 has 32 divisors (see below), whose sum is σ = 19492761600. Its totient is φ = 6651852480.

The previous prime is 12211100987. The next prime is 12211101043. The reversal of 12211101021 is 12010111221.

It is not a de Polignac number, because 12211101021 - 2⁷ = 12211100893 is a prime.

It is a super-2 number, since 2×12211101021² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12211100988 and 12211101006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211101521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78795 + ... + 175016.

It is an arithmetic number, because the mean of its divisors is an integer number (609148800).

Almost surely, 2^12211101021 is an apocalyptic number.

It is an amenable number.

12211101021 is a deficient number, since it is larger than the sum of its proper divisors (7281660579).

12211101021 is a wasteful number, since it uses less digits than its factorization.

12211101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253929.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12211101021 its reverse (12010111221), we get a palindrome (24221212242).

The spelling of 12211101021 in words is "twelve billion, two hundred eleven million, one hundred one thousand, twenty-one".