1210020111020 has 36 divisors (see below), whose sum is σ = 2955906273600. Its totient is φ = 414864037728.

The previous prime is 1210020110993. The next prime is 1210020111029. The reversal of 1210020111020 is 201110200121.

It is a junction number, because it is equal to n+sod(n) for n = 1210020110992 and 1210020111010.

It is not an unprimeable number, because it can be changed into a prime (1210020111029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 617356220 + ... + 617358179.

It is an arithmetic number, because the mean of its divisors is an integer number (82108507600).

Almost surely, 2^{1210020111020} is an apocalyptic number.

1210020111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210020111020 is an abundant number, since it is smaller than the sum of its proper divisors (1745886162580).

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

1210020111020 is a wasteful number, since it uses less digits than its factorization.

1210020111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234714422 (or 1234714413 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1210020111020 its reverse (201110200121), we get a palindrome (1411130311141).

The spelling of 1210020111020 in words is "one trillion, two hundred ten billion, twenty million, one hundred eleven thousand, twenty".