20202121101132 has 18 divisors (see below), whose sum is σ = 51066472783508. Its totient is φ = 6734040367032.

The previous prime is 20202121101121. The next prime is 20202121101137. The reversal of 20202121101132 is 23110112120202.

It is a tau number, because it is divible by the number of its divisors (18).

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

It is not an unprimeable number, because it can be changed into a prime (20202121101137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280585015258 + ... + 280585015329.

Almost surely, 2^{20202121101132} is an apocalyptic number.

It is an amenable number.

20202121101132 is an abundant number, since it is smaller than the sum of its proper divisors (30864351682376).

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

20202121101132 is a wasteful number, since it uses less digits than its factorization.

20202121101132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561170030597 (or 561170030592 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 20202121101132 its reverse (23110112120202), we get a palindrome (43312233221334).

The spelling of 20202121101132 in words is "twenty trillion, two hundred two billion, one hundred twenty-one million, one hundred one thousand, one hundred thirty-two".