2121101232312 has 16 divisors (see below), whose sum is σ = 5302753080840. Its totient is φ = 707033744096.

The previous prime is 2121101232227. The next prime is 2121101232317. The reversal of 2121101232312 is 2132321011212.

It is a super-3 number, since 3×2121101232312³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121101232317) 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, 44189608983 + ... + 44189609030.

Almost surely, 2^{2121101232312} is an apocalyptic number.

It is an amenable number.

2121101232312 is an abundant number, since it is smaller than the sum of its proper divisors (3181651848528).

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

2121101232312 is a wasteful number, since it uses less digits than its factorization.

2121101232312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88379218022 (or 88379218018 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 2121101232312 its reverse (2132321011212), we get a palindrome (4253422243524).

The spelling of 2121101232312 in words is "two trillion, one hundred twenty-one billion, one hundred one million, two hundred thirty-two thousand, three hundred twelve".