10123311212 has 36 divisors (see below), whose sum is σ = 20688459624. Its totient is φ = 4321658880.

The previous prime is 10123311157. The next prime is 10123311217. The reversal of 10123311212 is 21211332101.

It is not an unprimeable number, because it can be changed into a prime (10123311217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50114 + ... + 150857.

It is an arithmetic number, because the mean of its divisors is an integer number (574679434).

Almost surely, 2^10123311212 is an apocalyptic number.

It is an amenable number.

10123311212 is an abundant number, since it is smaller than the sum of its proper divisors (10565148412).

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

10123311212 is a wasteful number, since it uses less digits than its factorization.

10123311212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201246 (or 201237 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 10123311212 its reverse (21211332101), we get a palindrome (31334643313).

The spelling of 10123311212 in words is "ten billion, one hundred twenty-three million, three hundred eleven thousand, two hundred twelve".