2145236122 has 8 divisors (see below), whose sum is σ = 3218050836. Its totient is φ = 1072552512.

The previous prime is 2145236117. The next prime is 2145236123. The reversal of 2145236122 is 2216325412.

It can be written as a sum of positive squares in 2 ways, for example, as 2121431481 + 23804641 = 46059^2 + 4879^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2145236123) 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, 46018 + ... + 80050.

Almost surely, 2^2145236122 is an apocalyptic number.

2145236122 is a deficient number, since it is larger than the sum of its proper divisors (1072814714).

2145236122 is a wasteful number, since it uses less digits than its factorization.

2145236122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65552.

The product of its digits is 5760, while the sum is 28.

The square root of 2145236122 is about 46316.6937723322. The cubic root of 2145236122 is about 1289.7089105438.

The spelling of 2145236122 in words is "two billion, one hundred forty-five million, two hundred thirty-six thousand, one hundred twenty-two".