210011211201020 has 24 divisors (see below), whose sum is σ = 444496169854464. Its totient is φ = 83343031845696.

The previous prime is 210011211200969. The next prime is 210011211201109. The reversal of 210011211201020 is 20102112110012.

It is a junction number, because it is equal to n+sod(n) for n = 210011211200986 and 210011211201004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41340787067 + ... + 41340792146.

It is an arithmetic number, because the mean of its divisors is an integer number (18520673743936).

Almost surely, 2^{210011211201020} is an apocalyptic number.

210011211201020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210011211201020 is an abundant number, since it is smaller than the sum of its proper divisors (234484958653444).

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

210011211201020 is a wasteful number, since it uses less digits than its factorization.

210011211201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82681579349 (or 82681579347 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210011211201020 its reverse (20102112110012), we get a palindrome (230113323311032).

The spelling of 210011211201020 in words is "two hundred ten trillion, eleven billion, two hundred eleven million, two hundred one thousand, twenty".