1121101001020 has 192 divisors, whose sum is σ = 3263005089792. Its totient is φ = 312149376000.

The previous prime is 1121101000993. The next prime is 1121101001071. The reversal of 1121101001020 is 201001011211.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1121101000988 and 1121101001006.

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, 282591 + ... + 1523830.

It is an arithmetic number, because the mean of its divisors is an integer number (16994818176).

Almost surely, 2^{1121101001020} is an apocalyptic number.

1121101001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121101001020 is an abundant number, since it is smaller than the sum of its proper divisors (2141904088772).

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

1121101001020 is a wasteful number, since it uses less digits than its factorization.

1121101001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806492 (or 1806490 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1121101001020 its reverse (201001011211), we get a palindrome (1322102012231).

The spelling of 1121101001020 in words is "one trillion, one hundred twenty-one billion, one hundred one million, one thousand, twenty".