12221013020131 has 4 divisors (see below), whose sum is σ = 12288532429264. Its totient is φ = 12153493611000.

The previous prime is 12221013020129. The next prime is 12221013020137. The reversal of 12221013020131 is 13102031012221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12221013020131 - 2¹ = 12221013020129 is a prime.

It is a super-2 number, since 2×12221013020131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12221013020099 and 12221013020108.

It is not an unprimeable number, because it can be changed into a prime (12221013020137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33759704295 + ... + 33759704656.

It is an arithmetic number, because the mean of its divisors is an integer number (3072133107316).

Almost surely, 2^{12221013020131} is an apocalyptic number.

12221013020131 is a deficient number, since it is larger than the sum of its proper divisors (67519409133).

12221013020131 is an equidigital number, since it uses as much as digits as its factorization.

12221013020131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67519409132.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12221013020131 its reverse (13102031012221), we get a palindrome (25323044032352).

The spelling of 12221013020131 in words is "twelve trillion, two hundred twenty-one billion, thirteen million, twenty thousand, one hundred thirty-one".