11021013020 has 24 divisors (see below), whose sum is σ = 23156602224. Its totient is φ = 4406029056.

The previous prime is 11021013007. The next prime is 11021013037. The reversal of 11021013020 is 2031012011.

It is a junction number, because it is equal to n+sod(n) for n = 11021012992 and 11021013010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110237 + ... + 184916.

It is an arithmetic number, because the mean of its divisors is an integer number (964858426).

Almost surely, 2^11021013020 is an apocalyptic number.

11021013020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11021013020 is an abundant number, since it is smaller than the sum of its proper divisors (12135589204).

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

11021013020 is a wasteful number, since it uses less digits than its factorization.

11021013020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297029 (or 297027 counting only the distinct ones).

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

Adding to 11021013020 its reverse (2031012011), we get a palindrome (13052025031).

The spelling of 11021013020 in words is "eleven billion, twenty-one million, thirteen thousand, twenty".