1210210120020 has 96 divisors (see below), whose sum is σ = 3697186461696. Its totient is φ = 293341046400.

The previous prime is 1210210120003. The next prime is 1210210120027. The reversal of 1210210120020 is 200210120121.

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 = 1210210119978 and 1210210120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210210120027) 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, 4466625 + ... + 4729815.

It is an arithmetic number, because the mean of its divisors is an integer number (38512358976).

Almost surely, 2^{1210210120020} is an apocalyptic number.

1210210120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210210120020 is an abundant number, since it is smaller than the sum of its proper divisors (2486976341676).

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

1210210120020 is a wasteful number, since it uses less digits than its factorization.

1210210120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270181 (or 270179 counting only the distinct ones).

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

Adding to 1210210120020 its reverse (200210120121), we get a palindrome (1410420240141).

It can be divided in two parts, 12102101 and 20020, that added together give a palindrome (12122121).

The spelling of 1210210120020 in words is "one trillion, two hundred ten billion, two hundred ten million, one hundred twenty thousand, twenty".