211101022020 has 48 divisors (see below), whose sum is σ = 675523271808. Its totient is φ = 48251662080.

The previous prime is 211101022019. The next prime is 211101022021. The reversal of 211101022020 is 20220101112.

211101022020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (211101022019) and next prime (211101022021).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 211101021987 and 211101022005.

It is not an unprimeable number, because it can be changed into a prime (211101022021) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 251310321 + ... + 251311160.

It is an arithmetic number, because the mean of its divisors is an integer number (14073401496).

Almost surely, 2^211101022020 is an apocalyptic number.

211101022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211101022020 is an abundant number, since it is smaller than the sum of its proper divisors (464422249788).

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

211101022020 is a wasteful number, since it uses less digits than its factorization.

211101022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502621500 (or 502621498 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 211101022020 its reverse (20220101112), we get a palindrome (231321123132).

The spelling of 211101022020 in words is "two hundred eleven billion, one hundred one million, twenty-two thousand, twenty".