20021012220000 has 240 divisors, whose sum is σ = 71643192489792. Its totient is φ = 4853578560000.

The previous prime is 20021012219963. The next prime is 20021012220031. The reversal of 20021012220000 is 2221012002.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14507434 + ... + 15827433.

Almost surely, 2^{20021012220000} is an apocalyptic number.

20021012220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021012220000 is an abundant number, since it is smaller than the sum of its proper divisors (51622180269792).

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

20021012220000 is a wasteful number, since it uses less digits than its factorization.

20021012220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30334911 (or 30334888 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20021012220000 its reverse (2221012002), we get a palindrome (20023233232002).

The spelling of 20021012220000 in words is "twenty trillion, twenty-one billion, twelve million, two hundred twenty thousand".