20202311212020 has 144 divisors (see below), whose sum is σ = 70921194140160. Its totient is φ = 4559219578368.

The previous prime is 20202311211983. The next prime is 20202311212021. The reversal of 20202311212020 is 2021211320202.

20202311212020 is a `hidden beast` number, since 202 + 0 + 231 + 1 + 212 + 0 + 20 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 20202311211984 and 20202311212002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202311212021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 101378817 + ... + 101577896.

It is an arithmetic number, because the mean of its divisors is an integer number (492508292640).

Almost surely, 2^{20202311212020} is an apocalyptic number.

20202311212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202311212020 is an abundant number, since it is smaller than the sum of its proper divisors (50718882928140).

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

20202311212020 is a wasteful number, since it uses less digits than its factorization.

20202311212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202956814 (or 202956809 counting only the distinct ones).

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

Adding to 20202311212020 its reverse (2021211320202), we get a palindrome (22223522532222).

The spelling of 20202311212020 in words is "twenty trillion, two hundred two billion, three hundred eleven million, two hundred twelve thousand, twenty".