20133121352 has 32 divisors (see below), whose sum is σ = 40201255800. Its totient is φ = 9419633664.

The previous prime is 20133121339. The next prime is 20133121409. The reversal of 20133121352 is 25312133102.

It can be written as a sum of positive squares in 4 ways, for example, as 18299055076 + 1834066276 = 135274^2 + 42826^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404327 + ... + 451382.

Almost surely, 2^20133121352 is an apocalyptic number.

It is an amenable number.

20133121352 is a deficient number, since it is larger than the sum of its proper divisors (20068134448).

20133121352 is a wasteful number, since it uses less digits than its factorization.

20133121352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855905 (or 855901 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 20133121352 its reverse (25312133102), we get a palindrome (45445254454).

The spelling of 20133121352 in words is "twenty billion, one hundred thirty-three million, one hundred twenty-one thousand, three hundred fifty-two".