11030121020 has 12 divisors (see below), whose sum is σ = 23163254184. Its totient is φ = 4412048400.

The previous prime is 11030121013. The next prime is 11030121059. The reversal of 11030121020 is 2012103011.

It is a junction number, because it is equal to n+sod(n) for n = 11030120992 and 11030121010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275753006 + ... + 275753045.

It is an arithmetic number, because the mean of its divisors is an integer number (1930271182).

Almost surely, 2^11030121020 is an apocalyptic number.

11030121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11030121020 is an abundant number, since it is smaller than the sum of its proper divisors (12133133164).

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

11030121020 is a wasteful number, since it uses less digits than its factorization.

11030121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551506060 (or 551506058 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 11030121020 its reverse (2012103011), we get a palindrome (13042224031).

The spelling of 11030121020 in words is "eleven billion, thirty million, one hundred twenty-one thousand, twenty".