210011021221020 has 24 divisors (see below), whose sum is σ = 588030859419024. Its totient is φ = 56002938992256.

The previous prime is 210011021221003. The next prime is 210011021221087. The reversal of 210011021221020 is 20122120110012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1750091843449 + ... + 1750091843568.

It is an arithmetic number, because the mean of its divisors is an integer number (24501285809126).

Almost surely, 2^{210011021221020} is an apocalyptic number.

210011021221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210011021221020 is an abundant number, since it is smaller than the sum of its proper divisors (378019838198004).

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

210011021221020 is a wasteful number, since it uses less digits than its factorization.

210011021221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500183687029 (or 3500183687027 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210011021221020 its reverse (20122120110012), we get a palindrome (230133141331032).

The spelling of 210011021221020 in words is "two hundred ten trillion, eleven billion, twenty-one million, two hundred twenty-one thousand, twenty".