211220002201020 has 24 divisors (see below), whose sum is σ = 591416006163024. Its totient is φ = 56325333920256.

The previous prime is 211220002200997. The next prime is 211220002201099. The reversal of 211220002201020 is 20102200022112.

It is a super-2 number, since 2×211220002201020² (a number of 29 digits) contains 22 as substring.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1760166684949 + ... + 1760166685068.

It is an arithmetic number, because the mean of its divisors is an integer number (24642333590126).

Almost surely, 2^{211220002201020} is an apocalyptic number.

211220002201020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211220002201020 is an abundant number, since it is smaller than the sum of its proper divisors (380196003962004).

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

211220002201020 is a wasteful number, since it uses less digits than its factorization.

211220002201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520333370029 (or 3520333370027 counting only the distinct ones).

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

Adding to 211220002201020 its reverse (20102200022112), we get a palindrome (231322202223132).

The spelling of 211220002201020 in words is "two hundred eleven trillion, two hundred twenty billion, two million, two hundred one thousand, twenty".