20121311332 has 12 divisors (see below), whose sum is σ = 35250204780. Its totient is φ = 10049824256.

The previous prime is 20121311323. The next prime is 20121311341. The reversal of 20121311332 is 23311312102.

It is an interprime number because it is at equal distance from previous prime (20121311323) and next prime (20121311341).

It can be written as a sum of positive squares in 2 ways, for example, as 1399957056 + 18721354276 = 37416^2 + 136826^2 .

It is a super-2 number, since 2×20121311332² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 2703673 + ... + 2711104.

It is an arithmetic number, because the mean of its divisors is an integer number (2937517065).

Almost surely, 2^20121311332 is an apocalyptic number.

It is an amenable number.

20121311332 is a deficient number, since it is larger than the sum of its proper divisors (15128893448).

20121311332 is a wasteful number, since it uses less digits than its factorization.

20121311332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5415710 (or 5415708 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20121311332 its reverse (23311312102), we get a palindrome (43432623434).

The spelling of 20121311332 in words is "twenty billion, one hundred twenty-one million, three hundred eleven thousand, three hundred thirty-two".