20212221021120 has 224 divisors, whose sum is σ = 71848535235840. Its totient is φ = 5348780835840.

The previous prime is 20212221021089. The next prime is 20212221021127. The reversal of 20212221021120 is 2112012221202.

It is a happy number.

20212221021120 is a `hidden beast` number, since 2 + 0 + 212 + 221 + 0 + 211 + 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 = 20212221021093 and 20212221021102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212221021127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7797082 + ... + 10060761.

Almost surely, 2^{20212221021120} is an apocalyptic number.

20212221021120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20212221021120 is an abundant number, since it is smaller than the sum of its proper divisors (51636314214720).

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

20212221021120 is a wasteful number, since it uses less digits than its factorization.

20212221021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17858000 (or 17857984 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20212221021120 its reverse (2112012221202), we get a palindrome (22324233242322).

The spelling of 20212221021120 in words is "twenty trillion, two hundred twelve billion, two hundred twenty-one million, twenty-one thousand, one hundred twenty".