10221021120020 has 48 divisors (see below), whose sum is σ = 21634655938560. Its totient is φ = 4055934524544.

The previous prime is 10221021120017. The next prime is 10221021120047. The reversal of 10221021120020 is 2002112012201.

It is a junction number, because it is equal to n+sod(n) for n = 10221021119977 and 10221021120004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38544446 + ... + 38808714.

It is an arithmetic number, because the mean of its divisors is an integer number (450721998720).

Almost surely, 2^{10221021120020} is an apocalyptic number.

10221021120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221021120020 is an abundant number, since it is smaller than the sum of its proper divisors (11413634818540).

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

10221021120020 is a wasteful number, since it uses less digits than its factorization.

10221021120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279632 (or 279630 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10221021120020 its reverse (2002112012201), we get a palindrome (12223133132221).

The spelling of 10221021120020 in words is "ten trillion, two hundred twenty-one billion, twenty-one million, one hundred twenty thousand, twenty".