123011322019 has 16 divisors (see below), whose sum is σ = 125345462400. Its totient is φ = 120695607360.

The previous prime is 123011321987. The next prime is 123011322047. The reversal of 123011322019 is 910223110321.

It is a cyclic number.

It is not a de Polignac number, because 123011322019 - 2⁵ = 123011321987 is a prime.

It is a super-2 number, since 2×123011322019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123011321984 and 123011322002.

It is not an unprimeable number, because it can be changed into a prime (123011322079) 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, 30008032 + ... + 30012130.

It is an arithmetic number, because the mean of its divisors is an integer number (7834091400).

Almost surely, 2^123011322019 is an apocalyptic number.

123011322019 is a deficient number, since it is larger than the sum of its proper divisors (2334140381).

123011322019 is a wasteful number, since it uses less digits than its factorization.

123011322019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6210.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 123011322019 in words is "one hundred twenty-three billion, eleven million, three hundred twenty-two thousand, nineteen".