2148812121 has 16 divisors (see below), whose sum is σ = 3038395968. Its totient is φ = 1346150400.

The previous prime is 2148812119. The next prime is 2148812143. The reversal of 2148812121 is 1212188412.

It is not a de Polignac number, because 2148812121 - 2¹ = 2148812119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2148812021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175 + ... + 65556.

It is an arithmetic number, because the mean of its divisors is an integer number (189899748).

Almost surely, 2^2148812121 is an apocalyptic number.

It is an amenable number.

2148812121 is a deficient number, since it is larger than the sum of its proper divisors (889583847).

2148812121 is a wasteful number, since it uses less digits than its factorization.

2148812121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66392.

The product of its digits is 2048, while the sum is 30.

The square root of 2148812121 is about 46355.2814790289. The cubic root of 2148812121 is about 1290.4251390035.

The spelling of 2148812121 in words is "two billion, one hundred forty-eight million, eight hundred twelve thousand, one hundred twenty-one".