1121021031020 has 36 divisors (see below), whose sum is σ = 2587613013552. Its totient is φ = 407644010400.

The previous prime is 1121021030999. The next prime is 1121021031073. The reversal of 1121021031020 is 201301201211.

It is a junction number, because it is equal to n+sod(n) for n = 1121021030986 and 1121021031004.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231613496 + ... + 231618335.

Almost surely, 2^{1121021031020} is an apocalyptic number.

1121021031020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121021031020 is an abundant number, since it is smaller than the sum of its proper divisors (1466591982532).

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

1121021031020 is a wasteful number, since it uses less digits than its factorization.

1121021031020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463231862 (or 463231849 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1121021031020 its reverse (201301201211), we get a palindrome (1322322232231).

The spelling of 1121021031020 in words is "one trillion, one hundred twenty-one billion, twenty-one million, thirty-one thousand, twenty".