20130121352 has 32 divisors (see below), whose sum is σ = 41239005120. Its totient is φ = 9135887040.

The previous prime is 20130121337. The next prime is 20130121367. The reversal of 20130121352 is 25312103102.

It is an interprime number because it is at equal distance from previous prime (20130121337) and next prime (20130121367).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119843 + ... + 233714.

It is an arithmetic number, because the mean of its divisors is an integer number (1288718910).

Almost surely, 2^20130121352 is an apocalyptic number.

20130121352 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20130121352 is an abundant number, since it is smaller than the sum of its proper divisors (21108883768).

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

20130121352 is a wasteful number, since it uses less digits than its factorization.

20130121352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354221 (or 354217 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 20130121352 its reverse (25312103102), we get a palindrome (45442224454).

The spelling of 20130121352 in words is "twenty billion, one hundred thirty million, one hundred twenty-one thousand, three hundred fifty-two".