1210102020120 has 256 divisors, whose sum is σ = 4213202273280. Its totient is φ = 272339712000.

The previous prime is 1210102020119. The next prime is 1210102020137. The reversal of 1210102020120 is 210202010121.

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 = 1210102020096 and 1210102020105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15316639 + ... + 15395441.

It is an arithmetic number, because the mean of its divisors is an integer number (16457821380).

Almost surely, 2^{1210102020120} is an apocalyptic number.

1210102020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1210102020120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2106601136640).

1210102020120 is an abundant number, since it is smaller than the sum of its proper divisors (3003100253160).

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

1210102020120 is a wasteful number, since it uses less digits than its factorization.

1210102020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79106 (or 79102 counting only the distinct ones).

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

Adding to 1210102020120 its reverse (210202010121), we get a palindrome (1420304030241).

Subtracting from 1210102020120 its reverse (210202010121), we obtain a palindrome (999900009999).

The spelling of 1210102020120 in words is "one trillion, two hundred ten billion, one hundred two million, twenty thousand, one hundred twenty".