211310123310020 has 48 divisors (see below), whose sum is σ = 507147596847360. Its totient is φ = 72448713577344.

The previous prime is 211310123309977. The next prime is 211310123310023. The reversal of 211310123310020 is 20013321013112.

It is a happy number.

211310123310020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211310123310020² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 211310123309974 and 211310123310001.

It is not an unprimeable number, because it can be changed into a prime (211310123310023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17022662 + ... + 26690658.

It is an arithmetic number, because the mean of its divisors is an integer number (10565574934320).

Almost surely, 2^{211310123310020} is an apocalyptic number.

211310123310020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211310123310020 is an abundant number, since it is smaller than the sum of its proper divisors (295837473537340).

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

211310123310020 is a wasteful number, since it uses less digits than its factorization.

211310123310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9824132 (or 9824130 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 211310123310020 its reverse (20013321013112), we get a palindrome (231323444323132).

The spelling of 211310123310020 in words is "two hundred eleven trillion, three hundred ten billion, one hundred twenty-three million, three hundred ten thousand, twenty".