2122453121644 has 48 divisors (see below), whose sum is σ = 3774419355168. Its totient is φ = 1044196328448.

The previous prime is 2122453121623. The next prime is 2122453121683. The reversal of 2122453121644 is 4461213542212.

It is a super-2 number, since 2×2122453121644² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82518274 + ... + 82543990.

It is an arithmetic number, because the mean of its divisors is an integer number (78633736566).

Almost surely, 2^{2122453121644} is an apocalyptic number.

It is an amenable number.

2122453121644 is a deficient number, since it is larger than the sum of its proper divisors (1651966233524).

2122453121644 is a wasteful number, since it uses less digits than its factorization.

2122453121644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27154 (or 27152 counting only the distinct ones).

The product of its digits is 92160, while the sum is 37.

Adding to 2122453121644 its reverse (4461213542212), we get a palindrome (6583666663856).

The spelling of 2122453121644 in words is "two trillion, one hundred twenty-two billion, four hundred fifty-three million, one hundred twenty-one thousand, six hundred forty-four".