211201010021020 has 12 divisors (see below), whose sum is σ = 443522121044184. Its totient is φ = 84480404008400.

The previous prime is 211201010020997. The next prime is 211201010021047. The reversal of 211201010021020 is 20120010102112.

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 3 ways as a sum of consecutive naturals, for example, 5280025250506 + ... + 5280025250545.

It is an arithmetic number, because the mean of its divisors is an integer number (36960176753682).

Almost surely, 2^{211201010021020} is an apocalyptic number.

211201010021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211201010021020 is an abundant number, since it is smaller than the sum of its proper divisors (232321111023164).

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

211201010021020 is a wasteful number, since it uses less digits than its factorization.

211201010021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10560050501060 (or 10560050501058 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211201010021020 its reverse (20120010102112), we get a palindrome (231321020123132).

The spelling of 211201010021020 in words is "two hundred eleven trillion, two hundred one billion, ten million, twenty-one thousand, twenty".