12210210111021 has 16 divisors (see below), whose sum is σ = 17558506930944. Its totient is φ = 7502876506944.

The previous prime is 12210210111007. The next prime is 12210210111053. The reversal of 12210210111021 is 12011101201221.

It is a happy number.

It is not a de Polignac number, because 12210210111021 - 2²¹ = 12210208013869 is a prime.

It is a super-2 number, since 2×12210210111021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210210112021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231201301 + ... + 231254106.

It is an arithmetic number, because the mean of its divisors is an integer number (1097406683184).

Almost surely, 2^{12210210111021} is an apocalyptic number.

It is an amenable number.

12210210111021 is a deficient number, since it is larger than the sum of its proper divisors (5348296819923).

12210210111021 is a wasteful number, since it uses less digits than its factorization.

12210210111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462456100.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12210210111021 its reverse (12011101201221), we get a palindrome (24221311312242).

The spelling of 12210210111021 in words is "twelve trillion, two hundred ten billion, two hundred ten million, one hundred eleven thousand, twenty-one".