123100021030 has 32 divisors (see below), whose sum is σ = 253275289344. Its totient is φ = 42198894816.

The previous prime is 123100021013. The next prime is 123100021123. The reversal of 123100021030 is 30120001321.

It is a self number, because there is not a number n which added to its sum of digits gives 123100021030.

It is a congruent number.

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, 303549 + ... + 581671.

It is an arithmetic number, because the mean of its divisors is an integer number (7914852792).

Almost surely, 2^123100021030 is an apocalyptic number.

123100021030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123100021030 is an abundant number, since it is smaller than the sum of its proper divisors (130175268314).

123100021030 is a wasteful number, since it uses less digits than its factorization.

123100021030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284460.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 123100021030 its reverse (30120001321), we get a palindrome (153220022351).

The spelling of 123100021030 in words is "one hundred twenty-three billion, one hundred million, twenty-one thousand, thirty".