1202123112 has 64 divisors (see below), whose sum is σ = 3102105600. Its totient is φ = 388006080.

The previous prime is 1202123063. The next prime is 1202123123. The reversal of 1202123112 is 2113212021.

It is a junction number, because it is equal to n+sod(n) for n = 1202123091 and 1202123100.

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, 88537 + ... + 101207.

It is an arithmetic number, because the mean of its divisors is an integer number (48470400).

Almost surely, 2^1202123112 is an apocalyptic number.

1202123112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1202123112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1551052800).

1202123112 is an abundant number, since it is smaller than the sum of its proper divisors (1899982488).

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

1202123112 is a wasteful number, since it uses less digits than its factorization.

1202123112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12806 (or 12802 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1202123112 is about 34671.6470909589. The cubic root of 1202123112 is about 1063.2849063766.

Adding to 1202123112 its reverse (2113212021), we get a palindrome (3315335133).

The spelling of 1202123112 in words is "one billion, two hundred two million, one hundred twenty-three thousand, one hundred twelve".