123021651016 has 16 divisors (see below), whose sum is σ = 251635195440. Its totient is φ = 55918932240.

The previous prime is 123021650987. The next prime is 123021651017. The reversal of 123021651016 is 610156120321.

It is not an unprimeable number, because it can be changed into a prime (123021651017) 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, 698986566 + ... + 698986741.

It is an arithmetic number, because the mean of its divisors is an integer number (15727199715).

Almost surely, 2^123021651016 is an apocalyptic number.

It is an amenable number.

123021651016 is an abundant number, since it is smaller than the sum of its proper divisors (128613544424).

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

123021651016 is a wasteful number, since it uses less digits than its factorization.

123021651016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397973324 (or 1397973320 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 123021651016 its reverse (610156120321), we get a palindrome (733177771337).

The spelling of 123021651016 in words is "one hundred twenty-three billion, twenty-one million, six hundred fifty-one thousand, sixteen".