2121150012 has 12 divisors (see below), whose sum is σ = 4949350056. Its totient is φ = 707050000.

The previous prime is 2121149969. The next prime is 2121150029. The reversal of 2121150012 is 2100511212.

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

It is a junction number, because it is equal to n+sod(n) for n = 2121149973 and 2121150000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88381239 + ... + 88381262.

It is an arithmetic number, because the mean of its divisors is an integer number (412445838).

Almost surely, 2^2121150012 is an apocalyptic number.

It is an amenable number.

2121150012 is an abundant number, since it is smaller than the sum of its proper divisors (2828200044).

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

2121150012 is a wasteful number, since it uses less digits than its factorization.

2121150012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176762508 (or 176762506 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 2121150012 is about 46055.9443720352. The cubic root of 2121150012 is about 1284.8639021732.

Adding to 2121150012 its reverse (2100511212), we get a palindrome (4221661224).

The spelling of 2121150012 in words is "two billion, one hundred twenty-one million, one hundred fifty thousand, twelve".