30100123020 has 96 divisors (see below), whose sum is σ = 92852718336. Its totient is φ = 7224736000.

The previous prime is 30100122991. The next prime is 30100123021. The reversal of 30100123020 is 2032100103.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 30100122987 and 30100123005.

It is not an unprimeable number, because it can be changed into a prime (30100123021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159114 + ... + 292433.

It is an arithmetic number, because the mean of its divisors is an integer number (967215816).

Almost surely, 2^30100123020 is an apocalyptic number.

30100123020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30100123020 is an abundant number, since it is smaller than the sum of its proper divisors (62752595316).

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

30100123020 is a wasteful number, since it uses less digits than its factorization.

30100123020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451671 (or 451669 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 30100123020 its reverse (2032100103), we get a palindrome (32132223123).

The spelling of 30100123020 in words is "thirty billion, one hundred million, one hundred twenty-three thousand, twenty".