1230123210100 has 18 divisors (see below), whose sum is σ = 2669367366134. Its totient is φ = 492049284000.

The previous prime is 1230123210073. The next prime is 1230123210101. The reversal of 1230123210100 is 10123210321.

It can be written as a sum of positive squares in 3 ways, for example, as 103646651364 + 1126476558736 = 321942^2 + 1061356^2 .

It is a super-2 number, since 2×1230123210100² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230123210101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6150615951 + ... + 6150616150.

Almost surely, 2^{1230123210100} is an apocalyptic number.

1230123210100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230123210100 is an abundant number, since it is smaller than the sum of its proper divisors (1439244156034).

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

1230123210100 is a wasteful number, since it uses less digits than its factorization.

1230123210100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12301232115 (or 12301232108 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1230123210100 its reverse (10123210321), we get a palindrome (1240246420421).

The spelling of 1230123210100 in words is "one trillion, two hundred thirty billion, one hundred twenty-three million, two hundred ten thousand, one hundred".