1111210221020 has 48 divisors (see below), whose sum is σ = 2393598695040. Its totient is φ = 433127215104.

The previous prime is 1111210221013. The next prime is 1111210221047. The reversal of 1111210221020 is 201220121111.

It is a junction number, because it is equal to n+sod(n) for n = 1111210220986 and 1111210221004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2365829 + ... + 2796348.

It is an arithmetic number, because the mean of its divisors is an integer number (49866639480).

Almost surely, 2^{1111210221020} is an apocalyptic number.

1111210221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111210221020 is an abundant number, since it is smaller than the sum of its proper divisors (1282388474020).

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

1111210221020 is a wasteful number, since it uses less digits than its factorization.

1111210221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5162462 (or 5162460 counting only the distinct ones).

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

Adding to 1111210221020 its reverse (201220121111), we get a palindrome (1312430342131).

Subtracting from 1111210221020 its reverse (201220121111), we obtain a palindrome (909990099909).

The spelling of 1111210221020 in words is "one trillion, one hundred eleven billion, two hundred ten million, two hundred twenty-one thousand, twenty".