211210102101020 has 96 divisors (see below), whose sum is σ = 491619575978496. Its totient is φ = 75582000864000.

The previous prime is 211210102100981. The next prime is 211210102101083. The reversal of 211210102101020 is 20101201012112.

It is a junction number, because it is equal to n+sod(n) for n = 211210102100986 and 211210102101004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26155367 + ... + 33264446.

It is an arithmetic number, because the mean of its divisors is an integer number (5121037249776).

Almost surely, 2^{211210102101020} is an apocalyptic number.

211210102101020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211210102101020 is an abundant number, since it is smaller than the sum of its proper divisors (280409473877476).

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

211210102101020 is a wasteful number, since it uses less digits than its factorization.

211210102101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59420091 (or 59420089 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211210102101020 its reverse (20101201012112), we get a palindrome (231311303113132).

The spelling of 211210102101020 in words is "two hundred eleven trillion, two hundred ten billion, one hundred two million, one hundred one thousand, twenty".