211110001210020 has 96 divisors (see below), whose sum is σ = 645217195674240. Its totient is φ = 51148650280960.

The previous prime is 211110001210007. The next prime is 211110001210027. The reversal of 211110001210020 is 20012100011112.

It is a super-2 number, since 2×211110001210020² (a number of 29 digits) contains 22 as substring.

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 = 211110001209978 and 211110001210005.

It is not an unprimeable number, because it can be changed into a prime (211110001210027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91142325 + ... + 93429884.

It is an arithmetic number, because the mean of its divisors is an integer number (6721012454940).

Almost surely, 2^{211110001210020} is an apocalyptic number.

211110001210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211110001210020 is an abundant number, since it is smaller than the sum of its proper divisors (434107194464220).

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

211110001210020 is a wasteful number, since it uses less digits than its factorization.

211110001210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184573965 (or 184573963 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211110001210020 its reverse (20012100011112), we get a palindrome (231122101221132).

The spelling of 211110001210020 in words is "two hundred eleven trillion, one hundred ten billion, one million, two hundred ten thousand, twenty".