20120212231 has 8 divisors (see below), whose sum is σ = 23162372640. Its totient is φ = 17120012928.

The previous prime is 20120212219. The next prime is 20120212243. The reversal of 20120212231 is 13221202102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20120212219) and next prime (20120212243).

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 20120212231 - 2⁵ = 20120212199 is a prime.

It is a super-2 number, since 2×20120212231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120212631) 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, 10489246 + ... + 10491163.

It is an arithmetic number, because the mean of its divisors is an integer number (2895296580).

Almost surely, 2^20120212231 is an apocalyptic number.

20120212231 is a deficient number, since it is larger than the sum of its proper divisors (3042160409).

20120212231 is a wasteful number, since it uses less digits than its factorization.

20120212231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20980553.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20120212231 its reverse (13221202102), we get a palindrome (33341414333).

The spelling of 20120212231 in words is "twenty billion, one hundred twenty million, two hundred twelve thousand, two hundred thirty-one".