2123510153212 has 24 divisors (see below), whose sum is σ = 4247550903680. Its totient is φ = 909962080560.

The previous prime is 2123510153161. The next prime is 2123510153221.

2123510153212 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4509162 + ... + 4957777.

Almost surely, 2^{2123510153212} is an apocalyptic number.

It is an amenable number.

2123510153212 is an abundant number, since it is smaller than the sum of its proper divisors (2124040750468).

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

2123510153212 is a wasteful number, since it uses less digits than its factorization.

2123510153212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9474961 (or 9474959 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

It can be divided in two parts, 2123510 and 153212, that added together give a palindrome (2276722).

The spelling of 2123510153212 in words is "two trillion, one hundred twenty-three billion, five hundred ten million, one hundred fifty-three thousand, two hundred twelve".