20120011221031 has 8 divisors (see below), whose sum is σ = 20529648216720. Its totient is φ = 19711485860352.

The previous prime is 20120011220951. The next prime is 20120011221067. The reversal of 20120011221031 is 13012211002102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20120011221031 - 2¹⁹ = 20120010696743 is a prime.

It is a super-2 number, since 2×20120011221031² (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 = 20120011220996 and 20120011221014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120011221131) 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, 277872186 + ... + 277944583.

It is an arithmetic number, because the mean of its divisors is an integer number (2566206027090).

Almost surely, 2^{20120011221031} is an apocalyptic number.

20120011221031 is a deficient number, since it is larger than the sum of its proper divisors (409636995689).

20120011221031 is an equidigital number, since it uses as much as digits as its factorization.

20120011221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555817505.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20120011221031 its reverse (13012211002102), we get a palindrome (33132222223133).

The spelling of 20120011221031 in words is "twenty trillion, one hundred twenty billion, eleven million, two hundred twenty-one thousand, thirty-one".