2231421552012 has 12 divisors (see below), whose sum is σ = 5206650288056. Its totient is φ = 743807184000.

The previous prime is 2231421551969. The next prime is 2231421552013. The reversal of 2231421552012 is 2102551241322.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×2231421552012³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2231421552013) 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, 92975897989 + ... + 92975898012.

Almost surely, 2^{2231421552012} is an apocalyptic number.

It is an amenable number.

2231421552012 is an abundant number, since it is smaller than the sum of its proper divisors (2975228736044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2231421552012 is a wasteful number, since it uses less digits than its factorization.

2231421552012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185951796008 (or 185951796006 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 2231421552012 its reverse (2102551241322), we get a palindrome (4333972793334).

The spelling of 2231421552012 in words is "two trillion, two hundred thirty-one billion, four hundred twenty-one million, five hundred fifty-two thousand, twelve".