20402211132 has 72 divisors (see below), whose sum is σ = 51839620560. Its totient is φ = 6765580800.

The previous prime is 20402211121. The next prime is 20402211149. The reversal of 20402211132 is 23111220402.

It is a happy number.

20402211132 is a `hidden beast` number, since 20 + 402 + 211 + 1 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6046998 + ... + 6050370.

It is an arithmetic number, because the mean of its divisors is an integer number (719994730).

Almost surely, 2^20402211132 is an apocalyptic number.

It is an amenable number.

20402211132 is an abundant number, since it is smaller than the sum of its proper divisors (31437409428).

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

20402211132 is a wasteful number, since it uses less digits than its factorization.

20402211132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4203 (or 4198 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20402211132 its reverse (23111220402), we get a palindrome (43513431534).

The spelling of 20402211132 in words is "twenty billion, four hundred two million, two hundred eleven thousand, one hundred thirty-two".