211020202201020 has 24 divisors (see below), whose sum is σ = 590856566163024. Its totient is φ = 56272053920256.

The previous prime is 211020202200967. The next prime is 211020202201037. The reversal of 211020202201020 is 20102202020112.

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 (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1758501684949 + ... + 1758501685068.

It is an arithmetic number, because the mean of its divisors is an integer number (24619023590126).

Almost surely, 2^{211020202201020} is an apocalyptic number.

211020202201020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211020202201020 is an abundant number, since it is smaller than the sum of its proper divisors (379836363962004).

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

211020202201020 is a wasteful number, since it uses less digits than its factorization.

211020202201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3517003370029 (or 3517003370027 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 211020202201020 its reverse (20102202020112), we get a palindrome (231122404221132).

The spelling of 211020202201020 in words is "two hundred eleven trillion, twenty billion, two hundred two million, two hundred one thousand, twenty".